Question

Write equations for the horizontal and vertical lines passing through the point (-1,8) .

horizontal line:

vertical line:

Answer 1

well, surely you know that
x = h
y = k
are vertical and horizontal lines.
So plug in your numbers for h and k.

Answer 2

If it is like in a graph, the vertical line should be up and down, and the horizontal should be side to side. X is side to side I'm pretty sure and Y is up and down.

Answer 3

If you know which one is x and which one is y, try answering the question like that.