8th Grade Module 3 Review

What is the value of x if 2x - 4 = 6?

x =

What is the solution to the equation shown?

5c + 4 = 2(c - 5)

• c = -2

• c = -3

Identify where the error occurred in the following problem.

Step 1 2(x - 5) = -(3x + 5)

Step 2 2x - 10 = -3x + 5

Step 3 5x = 15

Step 4 x = 3

• The error occurred when moving from Step 1 to Step 2

• The error occurred when moving from Step 2 to Step 3

• The error occurred when moving from Step 3 to Step 4

• There is no error in the problem

Correctly solve the problem

Step 1 2(x - 5) = -(3x + 5)

Step 2 2x - 10 = -3x + 5

Step 3 5x = 15

Step 4 x = 3

• The correct answer is x = 0

• The correct answer is x = 1

• The correct answer is x = 3

• The correct answer is x = 10

For what value for the constant, h, in the equation shown below will result in an infinite number of solutions?

• -2

• -3

• 2

• 3

What is the value of y if 3x = 4y and x = 4?

Enter the answer in the space provided.

y =

A teacher asks their students to solve the equation 9n - 21 = 69. One of their students claims that adding 21 to both sides of the equation and then dividing both sides of the equation by 9 will give solution to the equation. Are they correct?

• yes

• no

x - 5 = 3x + 2

Determine the value of x.

• -3.5

• -1.5

• 1.5

• 3.5

Determine the solution to the equation below.

-3.1x + 7 - 7.4x = 1.5 - 6 (x - 3/2)

• x = -6

• x = -4.5

• x = 4

• x = 9