Question

Help with three problems!!

The graph below shows the relationship between distance and time for a car driven at a constant speed.

3. What is the speed?

a. 60 mi/h
b. 50 mi/h
c. 80 mi/h
d. 40 mi/h

4. Is this a function relationship?

a. yes
b. no
c. There is not enough information to determine whether the relationship is a function.

5. If this is a function, select a rule to represent it.

a. d = t + 50
b. d = 60t
c. d = 40t + 10
d. The relationship is not a function.

Answer 1

I need help

Answer 2

d = r*t
--> r = d/t

to find speed of car divide distance traveled by time

Answer 3

Still lost

Answer 4

what does graph look like?

Answer 5

Cant upload for some reason

Answer 6

Take the gradient of the graph and you'll get the speed