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Math 8: Simple Interest Problem Solving – MATH

Solve problems to calculate simple interest using the formula I = Prt. Created in cooperation with Mathy Cathy!

Which choice best represents the variables in the simple interest formula, I = P • r • t ?

INTEREST = PRINCIPAL • RAT • TIME INTEREST = PRINCIPAL • RATE • TIP INTEREST = PRINCIPAL • RATE • TIME INTEREST = PRINCIPAL • RATIO • TIME
Which variable in the simple interest formula represents the fee charged for borrowing money?

I P r t
How much interest will you earn on your investment at the end of 2 years?

$59.20 $5.92 $190.92 $2.96
… and 9 more awesome questions! Check them out by clicking “Play”.

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Math 8: Problem Solving Using the Pythagorean Theorem – MATH

Use the Pythagorean Theorem and its converse to model and solve problems. Created in cooperation with Mathy Cathy!

Which side represents the hypotenuse of the right triangle?

x y z not here
Which sides represent the legs of the right triangle?

x and y y and z x and z not here
Which choice correctly states the Pythagorean Theorem?

a + b = c a² • b² = c² 2a + 2b = 2c a² + b² = c²
… and 10 more awesome questions! Check them out by clicking “Play”.

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Algebra: Factor Quadratic Trinomials – MATH

Factor, if possible, trinomials with real factors in the form ax^2 + bx + c, including perfect square trinomials of degree two. Based on TEKS standard A.10(E). Made in cooperati...

Which expression is equivalent to the given trinomial?

(x + 3)(x − 9) (x − 9)(x + 3) (x − 3)(x − 9) (x + 3)(x + 9)
Which expression is equivalent to the given trinomial?

(x + 10)(x − 2) (x + 10)(x + 2) (x − 10)(x − 2) (x + 5)(x + 4)
Which expression is a factor of the given trinomial?

x + 1 x + 3 x + 9 x - 3
… and 13 more awesome questions! Check them out by clicking “Play”.

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Algebra: Difference of Two Squares – MATH

Decide if a binomial can be written as the difference of two squares and use the structure of a difference of two squares to factor and rewrite the binomial. Based on TEKS stand...

What is the area of the blue square?

2a a² 4a not here
What is the area of the green square?

b² 4b 2b not here
What is the area of the blue figure now?

2a − 2b a² + b² 4a − 4b a² - b²
… and 14 more awesome questions! Check them out by clicking “Play”.

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Algebra: Solve Linear Systems – MATH

Solve systems of two linear equations with two variables for mathematical and real-world problems. Based on TEKS standard A.5(C). Made in cooperation with Mathy Cathy!

Which method would YOU use to solve this system of equations?

Substitution Elimination Graphing
Talk to a neighbor about WHY you chose the method you chose.

I chose SUBSTITUTION because... I chose ELIMINATION because... I chose GRAPHING because...
SOLVE the system.

(1, 9) (−1, 3) (0, 6) (4, 0)
… and 10 more awesome questions! Check them out by clicking “Play”.

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Algebra: Quadratics, Zeros, and Linear Factors – MATH

Describe the relationship between the linear factors of quadratic expressions and the zeros of their associated quadratic functions. Based on TEKS standard A.7(B). Made in coope...

What are the zeros of a quadratic function?

the x-intercept(s) the y-value(s) when x = 0 the x-value(s) when y = 0 the root(s)
What are the zeros of the quadratic function?

x = −6 and x = −4 x = 6 and x = −4 x = −6 and x = 4 x = 6 and x = 4
Which quadratic function has zeros of x = −1 and x = −2?

f(x) = (x − 1)(x − 2) f(x) = (x + 1)(x − 2) f(x) = (x − 1)(x + 2) f(x) = (x + 2)(x + 1)
… and 9 more awesome questions! Check them out by clicking “Play”.

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Algebra: Interpret Exponential Functions – MATH

Interpret the meaning of the values of "a" and "b" in exponential functions of the form f(x) = ab^x in real-world problems. Based on TEKS standard A.9(B). Created in cooperation...

In an exponential function, what does the value of a represent?

initial value independent variable decay factor starting amount
In an exponential function, what does the value of b represent?

initial value growth factor decay factor dependent variable
Which of the following describes the meaning of 1.06 in the equation?

The value of the frame will decrease by 1.06% each year The value of the frame will decrease by 6% each year The value of the frame will increase by 1.06% each year The value of the frame will increase by 6% each year
… and 11 more awesome questions! Check them out by clicking “Play”.

Algebra: Arithmetic and Geometric Sequences – MATH

Identify terms of arithmetic and geometric sequences when the sequences are given in function form using recursive processes. Based on TEKS standard A.12(C). Made in cooperation...

What's next?

24 18 16 8
How do you know what's next?

NEXT = NOW • 2 NEXT = NOW • 1/2 NEXT = NOW + 2 NEXT = NOW ÷ 1/2
To find the next term in a geometric sequence…

add the common difference d multiply by the common ratio r
… and 12 more awesome questions! Check them out by clicking “Play”.

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Algebra: Solve Quadratic Equations

Solve quadratic equations having real solutions by factoring, taking square roots, and completing the square. Based on TEKS standard A.8(A). Made in cooperation with Mathy Cathy!

WARM UP: Which algebraic expression represents the tiles?

x² + 6x x² + 6 x² + 3x x² - 6x
WARM UP: How many yellow unit tiles are needed to complete the square?

3 6 9 12
WARM UP: Which algebraic expression represents the area of the entire square?

(x + 3)² x² + 6x + 9 (x + 3)(x + 3) x² + 3x + 9
… and 11 more awesome questions! Check them out by clicking “Play”.

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Algebra: Transforming Quadratic Functions

Determine the effects of transformations on the graph of the quadratic parent function f(x) = x^2. Based on TEKS standard A.7(C). Made in cooperation with Mathy Cathy!

The graph of ƒ(x) = ax^2 + c is shown. Which values of a and c could represent function ƒ ?

a > 0 and c > 0 a < 0 and c > 0 a < 0 and c < 0 a > 0 and c < 0
Which statement comparing the parent function ƒ(x) = x^2 to the graph of g(x) = 4x^2 is true?

g is wider than ƒ g is 4 units below ƒ g is 4 units above ƒ g is narrower than ƒ
Which statement comparing parent function ƒ(x) = x^2 to the graph of g(x) = (x – 3)^2 is true?

g is 3 units to the left of ƒ g is 3 units to the right of ƒ g is 3 units below ƒ g is 3 units above ƒ
… and 10 more awesome questions! Check them out by clicking “Play”.

Algebra: Write a Linear System

Write systems of two linear equations given a graph or a verbal description. Based on TEKS standard A.2(I). Made in cooperation with Mathy Cathy!

What is a linear system?

Two or more linear equations with the same variables One linear equation with two variables Lines graphed together on the same coordinate plane The steepness of a line
Which system of linear equations is best represented by this graph?

𝒚 = 2𝒙 − 4 and 𝒚 = 𝒙 + 8 𝒚 = −2𝒙 − 4 and 𝒚 = 𝒙 + 8 𝒚 = −2𝒙 + 4 and 𝒚 = 𝒙 + 8 𝒚 = 2𝒙 − 4 and 𝒚 = 𝒙 − 8
Which pair of equations corresponds to the lines shown?

𝒚 = 𝒙 + 4 and 𝒚 = 𝒙 𝒚 = 𝒙 − 4 and 𝒚 = −𝒙 𝒚 = 𝒙 + 4 and 𝒚 = −𝒙 𝒚 = −𝒙 + 4 and 𝒚 = −𝒙
… and 12 more awesome questions! Check them out by clicking “Play”.

Algebra: Direct Variation

Write and solve equations involving direct variation. Based on TEKS standard A.2(D). Made in cooperation with Mathy Cathy!

When the value of 𝒚 is directly proportional to the value of 𝒙…

the relationship is linear the graph of the line passes through the origin there is a constant of variation, k y = kx
The value of y is directly proportional to the value of x.

8/3 3/8 0.375 π
The value of y is directly proportional to the value of x.

90 640 22.5 120
… and 9 more awesome questions! Check them out by clicking “Play”.

Algebra: Laws of Exponents

Simplify algebraic expressions using the laws of exponents, including integral and rational exponents. Based on TEKS standard A.11(B). Made in cooperation with Mathy Cathy!

What is the value of n?

60 -60 7 -7
What is the value of n?

16 10 6 4
What is the value of n?

-60 60 -7 17
… and 10 more awesome questions! Check them out by clicking “Play”.

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Algebra: Writing Exponential Growth and Decay Functions

Write exponential functions in the form f(x) = ab^x (where b is a rational number) to describe problems arising from mathematical and real-world situations, including growth and...

In the function f(x) = ab^x what does the variable a represent?

a is the growth or decay factor a is the independent variable a is the initial value a is the dependent variable
Which exponential function represents the relationship shown in the table?

g(x) = 4(0.25)^x g(x) = 4(¼)^x g(x) = 0.25(4)^x g(x) = (¼)(4)^x
Which function can be used to find the number of bacteria present at the end of h hours?

f(h) = (1,000)(0.2)^h f(h) = (1,000)(0.8)^h f(h) = (1.2)(1000)^h f(h) = (1,000)(1.2)^h
… and 9 more awesome questions! Check them out by clicking “Play”.

Algebra: Graphing Linear Inequalities in Two Variables at Thanksgiving

Graph the solution set of linear inequalities in two variables on the coordinate plane at Thanksgiving. Based on TEKS standard A.3(D). Made in cooperation with Mathy Cathy!

Which linear inequality is graphed?

𝒚 > 𝒙 + 4 𝒚 < 𝒙 + 4 𝒚 ≥ 𝒙 + 4 𝒚 ≤ 𝒙 + 4
Which food is in the half-plane that represents the SOLUTIONS to this inequality?

pumpkin cherry pie potato none of these
Is the PUMPKIN in the half-plane that represents the SOLUTIONS to this inequality?

NO YES
Which choice best describes the CHERRY PIE?

Every point on the pie is a solution to the inequality. Not every point on the pie is a solution to the inequality.
Which linear inequality is graphed?

𝒚 > −𝒙 − 1 𝒚 < −𝒙 − 1 𝒚 ≥ −𝒙 − 1 𝒚 ≤ −𝒙 − 1
… and 8 more awesome questions! Check them out by clicking “Play”.

Algebra: Rate of Change – Thanksgiving Edition

#Algebra #grade7 #grade8 #grade9 Calculate the #rate of change of a #linear #function represented algebraically, in a #table or in a #graph in mathematical and #Thanksgiving pro...

Which choice represents the unit rate for turkey cost with respect to the number of pounds?

$1.25 per pound $1.20 per pound $2.40 per pound $1.30 per pound
What is the rate of change of hours to thaw a frozen turkey with respect to weight, in pounds?

5 pounds per hour 5 hours per pound 6 hours per pound 6 pounds per hour
Grandma's on her way, and she's driving to your house! What is her constant rate of change?

100 miles per hour 60 miles per hour 55 miles per hour 50 miles per hour
Which choice represents the unit rate for cups of cubed sweet potato per serving of casserole?

1/3 cup per serving 3 cups per serving 1/5 cup per serving 5 cups per serving
The bakery sells corn muffins at the following prices. What is the constant rate of change?

$0.95 per muffin $0.90 per muffin $0.85 per muffin $0.80 per muffin
… and 6 more awesome questions! Check them out by clicking “Play”.

Algebra: Attributes of Quadratic Functions

Graph quadratic functions on the coordinate plane and identify key attributes, inc. x- & y-. Made in cooperation with Mathy Cathy!

What are the zeros of f?

0 −9 −3 and 3 −9, −3, and 3
What is the maximum value of g?

0 2 3 4
Which equation best represents the axis of symmetry?

𝒙 = −4 𝒚 = −4 𝒙 = −6 𝒚 = −2
What is the y-intercept of the graph of the quadratic function?

−3 −2 0 8
The graph of g is given. What is the minimum value of g?

−4 −3 −1 0
… and 9 more awesome questions! Check them out by clicking “Play”.

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Algebra: Domain and Range of Quadratics

Determine the domain and range of quadratic functions and represent the domain and range using inequalities. Based on TEKS standard A.6(A). Made in cooperation with Mathy Cathy!

Which word best describes the function shown?

linear exponential quadratic none of these
What is the range of the graphed function?

𝒚 > −1 𝒚 ≥ −1 𝒚 ≤ −1 All real numbers
What is the domain of the graphed function?

𝒙 > −1 𝒙 ≥ −1 𝒙 ≤ −1 All real numbers
What is the domain of f(𝒙) = 𝒙^2 + 4 ?

𝒙 < 2 f(𝒙) > 0 −2 ≤ 𝒙 ≤ 2 All real numbers
The table shows ordered pairs that belong to quadratic function g. What is the range of g?

All real numbers less than or equal to −2 All real numbers less than or equal to −11 All real numbers less than or equal to −3 All real numbers
… and 7 more awesome questions! Check them out by clicking “Play”.

Algebra: Graphing Linear Inequalities in Two Variables

Graph the solution set of linear inequalities in two variables on the coordinate plane. Based on TEKS standard A.3(D) Made in cooperation with Mathy Cathy!

Which linear inequality is graphed?

𝒚 > 𝒙 𝒚 < 𝒙 𝒚 ≥ 𝒙 𝒚 ≤ 𝒙
Which linear inequality is graphed?

𝒚 > 𝒙 − 2 𝒚 < 𝒙 − 2 𝒚 ≥ 𝒙 − 2 𝒚 ≤ 𝒙 − 2
Which linear inequality is graphed?

𝒚 > 2𝒙 + 4 𝒚 < 2𝒙 + 4 𝒚 ≥ 2𝒙 + 4 𝒚 ≤ 2𝒙 + 4
Which linear inequality is graphed?

𝒚 ≥ 3𝒙 − 2 𝒚 < 3𝒙 − 2 𝒚 > 3𝒙 − 2 𝒚 ≤ 3𝒙 − 2
Which ordered pair is in the solution set of 𝒚 < 𝒙 + 3 ?

(0, 3) (−4, 2) (1, 4) (2, 2)
… and 9 more awesome questions! Check them out by clicking “Play”.

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Algebra: Linear Equations From Slopes and Points

Write linear equations in two variables in slope-intercept, standard, and point-slope form, given one point and the slope or given two points. Based on TEKS standard A.2(B). Mad...

Which form of linear equation is shown?

Point-Slope Form Standard Form Slope-Intercept Form Quadratic Formula
Which form of linear equation is shown?

Standard Form Slope Formula Point-Slope Form Slope-Intercept Form
Which form of linear equation is shown?

Point-Slope Form Expanded Form Slope-Intercept Form Standard Form
Which equation in point-slope form has graph that passes through (2, 5) and has a slope of 3?

𝒚 − 2 = 3(𝒙 − 5) 𝒚 − 3 = 2(𝒙 − 5) 𝒚 − 5 = 3(𝒙 − 2) 𝒚 − 3 = 5(𝒙 − 2)
Which equation in standard form has a graph that passes through the points (0, -2) and (3, 0)?

2𝒙 + 3𝒚 = 6 3𝒙 + 2𝒚 = 6 3𝒙 − 2𝒚 = 6 2𝒙 − 3𝒚 = 6
… and 7 more awesome questions! Check them out by clicking “Play”.

Algebra: Lines Parallel or Perpendicular to Axes

Write an equation of a line that is parallel or perpendicular to an axis and determine whether the slope of the line is zero or undefined. Based on TEKS standard A.2(G). Made in...

What is the slope of the red line?

0 undefined 2 3
What is the slope of the blue line?

3 2 0 undefined
What is the slope of any line parallel to the 𝒙-axis?

0 undefined
What is the slope of any line perpendicular to the 𝒙-axis?

0 undefined
What is the slope of any line parallel to the 𝒚-axis?

0 undefined
… and 8 more awesome questions! Check them out by clicking “Play”.

Algebra: Rate of Change

#Algebra #grade8 #grade9 Calculate the #rate of change of a #linear #function represented algebraically, in a #table or in a #graph in mathematical and real world problems. Base...

What is the rate of change of 𝒚 with respect to 𝒙 for this linear function?

-5 -4 3 -12
Which choice represents the rate of change of dollars saved with respect to number of weeks?

$20 per week $50 per week $15 per week $25 per week
What is the rate of change of 𝒚 with respect to 𝒙 for this linear function?

10 0.75𝒙 -10 0.75𝒙
What is the rate of change of 𝒚 with respect to 𝒙 for this linear function?

6/5 5/6 1.2 1/4
Find the rate of change of the cost in dollars with respect to the number of hours.

$15 per hour $11 per hour $8 per hour $4 per hour
… and 7 more awesome questions! Check them out by clicking “Play”.

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Algebra: Linear Graphs

#Algebra #grade8 #grade9 #Graph #linear #functions on the #coordinate plane and identify key features including #x-intercept #y-intercept #zero and #slope in mathematical proble...

What is the 𝒚-intercept of the graphed line?

2 3 -4 -6
What is the 𝒙-intercept of the graphed line?

2 3 -1 -6
Identify an equation that represents the graphed line.

2𝒙 + 3𝒚 = 6 3𝒙 + 2𝒚 = 6 𝒚 = (-3/2)𝒙 + 3 𝒚 = (3/2)𝒙 + 3
Which statement about the graphed line is true?

Slope is 3/5 𝒙-intercept is -3 𝒚-intercept is -5 𝒚-intercept is -3
Which statement about the graphed line is not true?

Slope is 2/5 Slope is 5/2 𝒙-intercept is -5 𝒚-intercept is 2
… and 8 more awesome questions! Check them out by clicking “Play”.

Algebra: Domain and Range

#Algebra #grade8 #grade9 Determine the #domain and #range of relations and #linear #functions in mathematical and real-world problems, #using inequalities and #discrete sets bas...

State the domain of the given relation.

{2, 3, 7} {1, 4} {1, 2, 3, 4, 7}
State the range of the given relation.

{2, 3, 7} {1, 4} {1, 2, 3, 4, 7}
State the domain of the graphed function.

-1 ≤ 𝒙 ≤ 3 -2 ≤ 𝒚 ≤ 4 -2 ≤ 𝒙 ≤ 4 -1 ≤ 𝒚 ≤ 3
State the range of the graphed function.

-2 ≤ 𝒙 ≤ 4 -1 ≤ 𝒚 ≤ 3 -1 ≤ 𝒙 ≤ 3 -2 ≤ 𝒚 ≤ 4
What is the domain if at least 5 but not more than 10 t-shirts are purchased?

5 ≤ x ≤ 10 35 ≤ c ≤ 65 {5, 6, 7, 8, 9, 10} {35, 41, 47, 53, 59, 65}
… and 9 more awesome questions! Check them out by clicking “Play”.

Algebra: Write a Linear Function

#Algebra #grade8 #grade9 Write #linear #equations in two variables given a #table of values, a #graph, and a #verbal description. Based on TEKS standard A.2(C). This kahoot was ...

Which choice represents slope-intercept form of a linear function?

Ax + By = C y = mx + b
Which function can be used to create the table of values?

y = −15x − 4 y = −10x + 2 y = −5x − 4 y = −3x + 15
Write an equation that represents the graph. The next question will provide answer choices!

I'm finished... and confident! I'm finished... and unsure!
Which equation can be represented by the graph?

0.25x − y = 6 4x + y = 6 0.25x + y = 6 4x − y = 6
Write a function. The next question will provide answer choices… and points!

My linear function is awesome. My linear function is questionable.
… and 12 more awesome questions! Check them out by clicking “Play”.

Algebra: Features of Exponential Functions

Exponential functions that model growth and decay and identify key features, including y-intercept and asymptote, in mathematical and real-world problems. Based on TEKS standard...

Which term best describes the graphed function?

confidential linear quadratic exponential
Which choice best describes this graph?

exponential GROWTH model exponential DECAY model
What is an asymptote?

A line that the graph of a function intersects A line that the graph of a function approaches
… and 10 more awesome questions! Check them out by clicking “Play”.

Algebra: Systems of Linear Inequalities

Graph the solution set of systems of two linear inequalities in two variables on the coordinate plane. Based on TEKS standard A.3(H). Made in cooperation with Mathy Cathy

How many solutions does this system of linear inequalities have?

NO Solution ONE Solution TOO MANY Solutions to Count!
How many solutions does this system of linear inequalities have?

NO Solution ONE Solution TOO MANY Solutions to Count!
Which of the following labels the solution set of the system of linear inequalities?

Region A Region B Region C Region D
… and 11 more awesome questions! Check them out by clicking “Play”.

Algebra: Determining Slope

Determine the slope of a line given a table of values, two points on the line, or the equation in various forms including slope-intercept, point-slope, and standard form. Based ...

What is the slope of the line represented by the given equation?

1 3/5 5/3 -2
What is the slope of the line represented by the given equation?

7 -7 8 -8
What is the slope of the line represented by the given equation?

1 -1
… and 10 more awesome questions! Check them out by clicking “Play”.

Algebra: Solve Linear Equations in One Variable

Solve linear equations in one variable, including those for which the application of the distributive property is necessary and for which variables are included on both sides. B...

Which describes a possible first step to solve the given equation?

Divide both sides of the equation by 2 Distribute 2 to the expression in parentheses
Which statement best describes the error in this student’s work?

Incorrectly applied the Multiplication Property of Equality Incorrectly applied the Associative Property Incorrectly applied the Distributive Property Incorrectly applied the Commutative Property
Which statement best describes the error in this student’s work?

Incorrectly applied the Distributive Property Incorrectly applied the Associative Property Incorrectly applied the Multiplication Property of Equality Incorrectly applied the Addition Property of Equality
… and 9 more awesome questions! Check them out by clicking “Play”.

Math games for Texas by Kahoot!