Calculating Rate of Change Over Interval

What is the rate of change in the equation?
y=8x+6

• 8

• 6

Bob has $150 in his savings account and saves $40 per month. What is the rate of change?

• $150

• $40 per month

• $40 per day

The equation c = 0.20t + 3.50 shows the relationship between the charge c in dollars for renting a kayak for t minutes.  What is the meaning of the slope of the equation?

• For $1.00, you can rent a kayak for 20 minutes.

• It costs $0.20 per minute to rent the kayak.

• You have to pay $0.20 up front before using the kayak at all.

• Every .2 minutes, you have to pay $1.00.

What is the rate of change for the following graph?

• 80

• 20

• 40

• 160

Find the slope of the line.

• Undefined

• 0

• 1

• -1

Find the rate of change

• 1

• 2

• 11

• Not a constant slope/Non-Linear

What is the rate of change of the average height in feet of the trees with respect to the number of years since the trees were planted?

• 3 ft/yr

• 7 ft/yr

• 10 ft/yr

• 14 ft/yr

What is the rate of change of y with respect to x?

• -1/2

• -5/2

• 2/1

• -2/1

What is the rate of change of y with respect to x?

What was Brian's rate of change?

• 3/2

• 1.5

• 60

• 30