Math Functions

What is the rate of change in the equation y=2x + 3?

• 2

• 3

• 5

• Cannot be Determined

What is the initial value in the equation y= -2x + 5

• -2

• 3

• 5

• Cannot be Determined

Write the equation for the line in slope-intercept form.

• y= -1x+3

• y= 4x+3

• y=1/4x+3

• y= -4x+3

Suppose that a bike rents for $4 plus $1.50 per hour. Write an equation in slope-intercept form that models this situation.

• y = 4x + 1.50

• y = 1.50x + 4

Which company shows a greater rate of change?

• Water's Edge Rafts

• Ryan's Rafts

Adrianna has $20 in her savings account. Each week she will add $5 to it. Which equation represents this situation?

• y=25x

• y=20x+5

• y=5x+20

• y=5x

Compare the rates of change. Which statement is true about functions A and B?

• They have the same rate of change

• A has a greater rate of change than B

• A and B both have negative rates of change

• A has a negative ROC and B has a positive ROC

Compare the two linear functions listed below and determine which has a greater slope.

• Function 1 because the slope is 12

• Function 2 because the slope is 1

• Function 1 because the slope is 1/12

• They are equal 

f(x) = 3x + 10
g(x) = x - 2
Find f(g(5))

• 19

• 23

• -10

• None of these.

When f(x) = 2x and g(x) = x²+3 , find f(g(x)).

• x²+2x+3

• 4x²+3

• 2x²+3

• 2x²+6