Question

What is the slope and intercept for `y=9`?

Answer 1

It is a horizontal line. The slope = 0.
The line cuts the y-axis at the point `(0,9)`

Explanation:

`y = 9` is the equation of a horizontal line. The slope is 0.

If we write it in slope-intercept form we will have:

`y = 0x +9`

This means that for any value of `x` that is chosen, the y-value is always 9 Hence `y =9`.

The y-intercept is at the point `(0,9)`