Write an equation of the line that passes through (2, −4) and (0, −4)

Answer 1

First you need to find the slope: (y2 - y1)/(x2 -x1) = (-4 -(-4))/(0-2) = 0. So the line is horizontal, which means the y coordinate is constant and equal to -4, so the equation of the line is y = -4.

Answer 2

The first thing you want to do is find the slope of the line by rise/run

y1 - y2

---------

x1 - x2

-4 - (-4)

----------

2 - 0

0

-

2

The slope is 0.

The y-intercept is the point where x = 0. The given points already tell us it's -4.

Now we have the formula of y = mx + b or y = 0x - 4 or just y = -4

Shortcut, since both points have a y value of -4 you could have jumped directly to y = -4

Answer 3

When I say y-intercept form I mean slope intercept form. Sorry! Was a little distracted