Does y equals 5 have a slope?

Answer 1

Yes.

Technically all equations in Slope Intercept Form have slopes and y intercepts.

Slope Intercept Form is y = mx + b. (Where mx is the slope of the line and b is the y intercept.)

In your particular equation you can infer that 5 is the y intercept because you don't have your x variable there.

The slope in this case is 0, meaning your line is going to be horizontal across point (0, 5). (The y intercept)

Another way to write this equation which will make finding the slope much easier is y = 0x + 5. Because the equation says 0x, there is no need to put it.

It's like the difference between just saying x or saying 1x.