Answer:
B) 0
Explanation:
A regular slope-intercept equation would look like this:
y=mx+b
If your equation states y= number, it doesn't have a slope and is graphed as a horizontal line.
Examples:
y=2
y=7
If your equation states x= number, it's slope is going to be undefined and is graphed as a vertical line.
Examples:
x=2
x=7