Linear Equations Unit Test, Part 1

Simplify an expression for the perimeter of the equilateral triangle shown below.

• 15x - 6

• 5x - 2

• 10x - 4

• 3x - 2

Tags

CCSS.8.EE.C.7

CCSS.8.F.A.3

• 5x + 6

• 11x + 6

• 5x – 6

• 11x – 6

Simplify the expression by distributing and combining like terms. -7 + 3(-4x + 20) + 8x.

• -4x + 53

• 12x + 53

• -12x - 53

• 12x - 53

Which is the correct first step to solve the linear equation shown? 15 – 2.5x = 40.

• A. Add 2.5 to both sides

• B. Divide -2.5 from both sides

• C. Add 15 to both sides

• D. Subtract 15 from both sides

Tags

CCSS.8.EE.C.7

• x = 240

• x = 2400

• x = 192

• x = -192

Tags

CCSS.8.EE.C.7

Austin solved the equation as shown below. Which correctly describes the error that Austin made in his work?

-3 + 7x – 9 + 8x = 54

15x – 6 = 54

15x = 60

x = 4.

• A. Austin did not combine 7x and 8x correctly.

• B. Austin did not combine -3 and -9 correctly.

• C. Austin did not divide correctly

• D. Austin did not make an error in his work.

Tags

CCSS.8.EE.C.7

Solve the equation below. 34 = -2 + 9x + 16 + x.

• x = 2.

• x = 3.

• x = 4.

• x = 5.

Tags

CCSS.8.EE.C.7

Which of the following shows the equation after both sides have been distributed correctly? -4(x – 2) = 5(3x – 8).

• -4x – 8 = 15x – 40

• -4x – 6 = 15x – 3

• -4x + 8 = 15x – 40

• -4x + 8 = 15x + 40

Tags

CCSS.8.EE.C.7

The perimeter of the rectangle below is 102 inches. Find the value of x.

• x = 9

• x = 7

• x = 6

• x = 8

Tags

CCSS.8.EE.C.7

Solve the equation below.

-9x – 3(2x + 1) = 57.

• x = -5.

• x = 5.

• x = 4

• x = -4

Tags

CCSS.8.EE.C.7