Question

What is the distance between points 
(9, −7)
and 
(9, 4)
on a coordinate plane?

Answer 1

The answer would be 11 because the x's 9 doesnt have to move because they're on the same point. If you take 7 away from -7 you get zero. Add 4 to that 7 and you get 11. Make sesnse?
Hope this helped!