Question

How do you graph `y=-2`?

Answer 1

This is the equation of a horizontal line passing through the y-axis at -2

Explanation:

If you consider this equation in the form `y = mx+c`, then we see that `m=0`

This means that the line has a zero slope, so it is a horizontal line.
The `y-`intercept is `-2`

Therefore this is the equation of a horizontal line passing through the y-axis at -2.