Question

choose the equation of the horizontal line that passes through the point (−2, −1). y = −1 y = −2 x = −2 x = −1

Answer 1

`y=-1`

Explanation:

A Horizontal Line has equation of the form
`y=a` where
`a` is the y-coordinate.

The point here given in this problem is
`(-2,-1)`

What's the y-coordinate? It is
`-1`

So the Horizontal Line equation will be
`y=-1`

Answer 2

For a horizontal line, gradient is zero;
y=mx+c
since m=0
y=c
Replacing for y from given point;
-1=c
c=-1
y-1