Answer:
the slope of y = 3 is 0
Explanation:
we can use the acronym VUX/HOY to remind us about the properties of a certain line
Vertical line
Undefined slope
X axis
VUX means that a line passing x = b will have an undefined slope and will be a vertical line
Horizontal line
0 slope
Y axis
HOY means that a line passing through y = b will have a slope of 0 and will be a vertical line