Question

How do you find the slope of a line G(-3, 4) H(-3, -6)?

Answer 1

Considering your points I would say that you have a vertical line passing through `x=-3`. Try defining the slope of a vertical line is difficult because the slope represents the change in `y` for a change in `x` or:
Slope=`m=(Deltay)/(Delta(x))=(-6-4)/(-3+3)=-10/0` that cannot be evaluated!