Question

Find an equation of the line that goes through the points (3,8) and (-1,-4). Write your answer in the form y=mx+b

Answer 1

y = 3x -1

Explanation:

The 2-point form of the equation for a line is a good place to start:

y = (y2 -y1)/(x2 -x1)(x -x1) +y1

y = (-4-8)/(-1-3)(x -3) +8

y = (-12/-4)(x -3) +8

y = 3x -9 +8

y = 3x -1 . . . . the equation of your line