79.9k views
4 votes
Write an equation that represents the line going through the points (-4, 12) and (2, 15) HELPPP ASAPPP

1 Answer

1 vote

First we need the slope, which we can get using (y2 - y1) / (x2 - x1)

Plug in our coordinates and we get

(15 - 12) / (2 - -4)

3 / 6

1 / 2

So, our slope is 1/2.

Then, we take 1/2 of one of our x values, say, 2, and we get 1. How do we go from 1 to 15? We add 14. So our y - intercept is 14.

All this plugged into y = mx + b gives us the equation y = 1/2 x + 14

User Matthew A Thomas
by
6.0k points