The slope of a line parallel to this line is -4/7
And the slope of a line perpendicular is 3/4
Because

and

are inversely proportional, there is some constant

such that

Given that

and

, we have

So when

, you have
3 minutes because 60 minutes = an hour so 60/20 = 3 minutes so 3 minutes per mile
Answer:
Yes, side AD is the height of triangle ABC
Step-by-step explanation:
The side AD goes from the tip of the triangle (point A) to the base of the triangle (point D), and since that is the case it can accurately measure the triangle's height.