The lines below are perpendicular . If the slope of the green line is 3/2 , what is the slope of the red line?

If i recall right when two slopes are perpendicular one slope is supposed to be the negative reciprical of the other slope, because of this I think your answer should be B.

Hope this helps!

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value