Question

What is the equation of a horizontal line through (0, -1)?

Choose one 4 points
Oy=0
Ox=0
O y = -1
O x=11

Answer 1

(c) y = -1

Explanation:

You want the equation of the horizontal line through (0, -1).

Horizontal line

A horizontal line has the same y-value for every x-value. Its equation is ...

y = constant

Application

If you want the line to go through a point with a y-coordinate of -1, then the constant must be -1.

y = -1 . . . . . . . horizontal line through (0, -1)