Question

find the point -slope equation for the line that passes through the point (1,-10)and (-10,101). Use the first point in your equation.

Answer 1

y + 10 = (-111/11)(x - 1)

Explanation:

First find the slope. As we go from (-10, 101) to (1, -10), x (the "run") increases by 11 and y (the "rise") decreases by 111. Thus, the slope is

m = rise / run = -111/11.

Using the point (1, -10) and this slope, we get the equation

y + 10 = (-111/11)(x - 1)