Question

How do you graph `y=-1`?

Answer 1

See a solution process below:

Explanation:

`y = -1` has the same value (`-1` for this problem) for each and every value of `x`.

Therefore, this is a horizontal line with a `y`-intercept at `-1`:

graph{(y + 0.0000001x + 1) = 0 [-10, 10, -5, 5]}