Answers by visitors named: afjlkin
What I mean is that I keep confusing their slopes. Horizontal line y= and vertical line x=
Equation of a vertical line I mean.
Sorry to bother so much.For example, if I am asked for the equation of a horizontal line through (3,6)
it would be y=6
and if it was vertical
it would be x=3
So horizontal is y and vertical is x