Question

How do you find the slope of `y=5`?

Answer 1

The slope is zero.

Explanation:

You might immediately see that this equation represents a perfectly horizontal line that will have slope zero (neither increase nor decreases).
Also, in terms of general form you can write it as:
`y=mx+c` where `m` is the slope; but in your case you have:
`y=0x+5` giving `m=0`.

Graphically:

graph{0x+5 [-16.02, 16.02, -8.01, 8.01]}