This graph shows a car moving at a
constant speed. For example, in 8 hours
the car travels 400 miles.
Which equation shows the line on the
graph?
A y = 2x
B y = 50x
C y = 400x
If you set x to hours and y to the amount of miles, you can multiply the hours to the numbers and equal out your miles. So, if 8 hours is multiplied to 50, it equals out the 400 miles.