Question

How do you find the slope and y-intercept for the line `y=-7`?

Answer 1

For the equation `y=-7`
- the slope is `0`
- the y-intercept is `-7`

Explanation:

The slope is defined as the change in `y` for a corresponding change in `x`
Since the value of `y` does not change (i.e. its change is `0`) no matter by how much `x` changes,
the slope is `0`

The y-intercept is the value of `y` when `x=0`.
`y=-7` for all values of `x`
and therefore the y-intercept is `-7`

Note that the equation `y=-7` is a vertical line, 7 units below the X-axis.