Rate of Change on Graph

Find the average rate of change of Pete's height from 3 years old to 5 years old.

• 2 inches per year

• 8 inches per year

• 2 years

• 4 inches per year

During a snowstorm, John measured the total snowfall accumulated at the end of each hour.  He recorded his results in the table below.  What is the approximate average rate of change of the snowfall between 1 p.m. and 6 p.m.?

• 0.7 inch/hour

• 0.9 inch/hour

• 1.1 inch/hour

• 1.4 inch/hour

Which company shows a greater rate of change?

• Water's Edge Rafts

• Ryan's Rafts

What is the average rate of change between hour 15 and hour 30?

• $93.75/hr

• $6.25/hr

• $43.75/hr

• $6.75/hr

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

• 8

• 6

Charlie rented a moving truck. He paid a daily fee plus a per-mile fee to rent the truck. The equation below represents the daily amount Charlie paid for the truck if he drives it x miles.
y=0.5x+10
What does the slope of the graph of this equation represent?

• The daily fee for the moving truck

• The per-mile fee for the moving truck

• How much Charlie paid for the truck

• The number of miles he drove

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 mi/hr

• 20 mi/hr

• 40 mi/hr

• 160 mi/hr

The constant of proportionality of this graph is k = 45. What does it mean...a.k.a. - rate of change?

• The boat travels for 45 miles for every 45 hours

• The boat travels 1 mile for every 45 hours

• The boat travels 45 miles for every 1 hour

• The boat travels 1/45 mile for every 1 hour

What is the rate of change?

• 15 songs/hr

• 2/15 songs/hr

• 7.5 songs/hr

• 2 songs/hr