The graph below shows the distance (y) in kilometers of two cars from their destination at different times (x) in minutes. The table shows the values plotted on the graph.

http://assets.openstudy.com/updates/attachments/52cb1378e4b047f54eb2e5ad-taylor220337-1389040530481-openstudy.gif

Time
(in minutes)
x 0 10 20 30 40
Car 1
(in km)
y 40 30 20 10 0
Car 2
(in km)
y 40 32.68292 26.70432 21.81936 17.828

Part A: What does the x-intercept of the function for car 1 represent?

Part B: What does the y-intercept of the function for car 2 represent?

Question

The graph below shows the distance (y) in kilometers of two cars from their destination at different times (x) in minutes. The table shows the values plotted on the graph.

http://assets.openstudy.com/updates/attachments/52cb1378e4b047f54eb2e5ad-taylor220337-1389040530481-openstudy.gif

Time
(in minutes)
x	0	10	20	30	40	
Car 1
(in km)
y	40	30	20	10	0
Car 2
(in km)
y	40   32.68292     26.70432     21.81936    17.828

Part A: What does the x-intercept of the function for car 1 represent?

Part B: What does the y-intercept of the function for car 2 represent?

ageta · Answer

So x ranges from 0<=x<=50

It ranges from 0 to 50

ageta · Answer

Now the rate of change is a division. x/y , which is time over distance

ageta · Answer

y2 - y1 over x2 over x1

anonymous · Answer

Part C: What is the domain of the functions for car 1 and car 2?

Part D: What is the average rate of change from x=10 to x= 30 for the function representing the motion for car 2? What does the value of this average rate of change represent?