Math 8 Fall Final Review

• x = 2.6

• x = 1.1

• x = -2.6

• x = -1.1

Which equation represents the line shown on the coordinate plane?

• x = 0

• x = 8

• There is no solution.

• There are an infinite number of solutions.

There are two mechanics who work on cars. For each mechanic, the relationship between x, the number of hours worked, and y, the total cost, in dollars, is described below.

1. The equation y = 36x represents the total cost charged by Mechanic A for the number of hours worked.

2. The graph shown represents the total cost charged by Mechanic B for the number of hours worked.

Based on the information, which statement is true?

• Mechanic A charges $8.00 more per hour than Mechanic B.

• Mechanic B charges $8.00 more per hour than Mechanic A.

• Mechanic A charges $52.00 more per hour than Mechanic B.

• Mechanic B charges $52.00 more per hour than Mechanic A.

Which set of ordered pairs represents a function?

• {(-20,30), (-40,0), (-40,50)}

• {(-30,0), (-30,20), (-30,50)}

• {(-40,0), (20,-30), (60,-50)}

• {(-50,0), (20, -30), (-50,60)}

• 5

• 2

• -2

• -5

The steps a student took to solve an equation are shown. At what step did the student make an error?

• Step 1

• Step 2

• Step 3

• Step 4

Which of the following equations is nonlinear?