Unit 2 Assessment Practice

Based on the graph, select the ordered pair that is a solution to the equation

• (4,-2)

• (3,0)

• (2,3)

• (0,2)

What is the value of Y when X is -2

for the function Y = - x/2 +10

• 11

• 10/2

• 9/2

• 5

Which of these functions has a greater rate of change than the function graphed below, and why?

• y = x + 4, because the rate of change of the graphed function is 3/2

• y = 2x + 4, because the rate of change of the graphed function is 3/2

• y = 2x + 4, because the rate of change of the graphed function is 3/2

• y = 1/2x + 2, because the rate of change of the graphed function is 3/2

Johnny is driving home from the college. The table shows how the number of Miles remaining to get home is changing over time.

Choose the correct equation to match the table.

• Y= -50x + 420

• Y = 50x + 420

• Y = -50x + 270

• Y= 50x - 420

Which Function is represented by the table

• Y = 2x

• Y = -x + 2

• Y = 2x + 1

• Y = X + 6

This set of ordered pairs (x,y) defines a relation.

(2,-2), (-1,3) (3,1) (3,2)

Which best explains why this relation is NOT a function of x?

• (-1,3) has a negative value

• (2,2) and (3,2) have different X but the same Y value

• (3,1) and (3,2) have the same X but different Y values

• (2,-2) has a negative Y value)