Illustrative Math Unit 5 Quiz

Graph the linear function y = 2x - 3 on the coordinate plane.

• Graph the linear function y = 3x - 2 on the coordinate plane.

• Draw the exponential function y = 2^x - 3 on the coordinate plane.

• The correct answer is to graph the linear function y = 2x - 3 on the coordinate plane.

• Plot the quadratic function y = x^2 - 4x + 3 on the coordinate plane.

Find the slope and y-intercept of the linear function y = -4x + 5.

• The slope is 1 and the y-intercept is 1.

• The slope is -4 and the y-intercept is 5.

• The slope is 0 and the y-intercept is 5.

• The slope is 5 and the y-intercept is -4.

Tags

CCSS.8.EE.B.5

Determine the x-intercept of the linear function 3x - 2y = 6.

• x = 2

• x = 3

• x = 5

• x = 4

Solve the system of linear equations: y = 2x - 1 and y = -3x + 4.

• The solution is x = -1, y = 2.

• The solution is x = 1, y = 1.

• The solution is x = 0, y = 4.

• The solution is x = 2, y = -1.

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Identify the slope of the line passing through the points (2, 5) and (6, 11).

• 3

• 1

• 7

• 10

Tags

CCSS.8.EE.B.5

A car rental company charges a flat fee of $30 plus $0.25 per mile. Write a linear function to represent the total cost of renting a car for x miles.

• f(x) = 0.25x + 30

• f(x) = 30x + 0.25

• f(x) = 0.30x + 25

• f(x) = 0.25x - 30

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

A company sells t-shirts for $15 each. Write a linear function to represent the total revenue from selling x t-shirts.

• y = 15x

• y = 10x

• y = x + 15

• y = 20x

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

The temperature increases by 2 degrees every hour. Write a linear function to represent the temperature after x hours, if the initial temperature is 68 degrees.

• T(x) = 2x + 68

• T(x) = 2x - 68

• T(x) = 68 - 2x

• T(x) = 68 / 2x

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

A phone plan charges a flat fee of $20 plus $0.10 per minute. Write a linear function to represent the total cost of the phone plan for x minutes.

• C(x) = 0.15x + 15

• C(x) = 0.20x + 10

• C(x) = 0.10x + 20

• C(x) = 0.05x + 25

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

A garden is growing at a rate of 4 inches per week. Write a linear function to represent the height of the garden after x weeks, if the initial height is 12 inches.

• h(x) = 4x - 12

• h(x) = 4x / 12

• h(x) = 12x + 4

• h(x) = 4x + 12

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2