Respuesta :

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

Answer:

[tex]y=-1[/tex]


Step-by-step explanation:

A Horizontal Line has equation of the form  [tex]y=a[/tex]  where [tex]a[/tex] is the y-coordinate.

The point here given in this problem is  [tex](-2,-1)[/tex]

What's the y-coordinate? It is [tex]-1[/tex]

So the Horizontal Line equation will be  [tex]y=-1[/tex]