Question

A line passes through the points (-1,-4) and (-2,0). What is the equation of this line?

Answer 1

y = -4x -8

Explanation:

The slope is given by

m = (y2-y1)/(x2-x1)

m = (0--4)/(-2--1)

= (0+4)/(-2+1)

=4/-1

= -4

We know the point slope form of a line is

y-y1 = m(x-x1)

y-0 = -4( x--2)

y = -4(x+2)

y = -4x -8