A round-trip car ride took 12 hours. The first half took 7 hours at a rate of 45 miles per hour. What was the average rate of speed on the return trips?

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step-by-step explanation:

the slope of the line is 60

one point on the line is (40,10)

step-by-step explanation:

in the equation outside the parenthesis the equation always tells you the slope. in this case it is 60.

in the parenthesis is also says 40 which is x because it is near the x and 10 is y because it is near y.

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