Question

The points (f,10) and ( – 9,7) fall on a line with a slope of 3. What is the value of f?

Answer 1

f = -8

Explanation:

Since the slope is 3, or 3/1, we know the rise is 3. The y-coordinates changed by 3 between the points, so we need to vary it by 1 on the x-coordinate, making the answer f = -8.