Question

What is the slope of the line y = 3

Answer 1

where did you get 1 and 0

Answer 2

no....When you have the form:
\[y = mx + b\]
the 'm' coefficient in front of the x term represents your slope. In this case, since you don't see an x term the 'm' coefficient must be zero, the slope is zero

Answer 3

In other words the equation y=3 defines a line where the y value is always 3. Since the heigh doesn't change the slope must be zero.