Answer:
The lines are perpendicular because the y=-7 is horizontal and the line x=4 is vertical. They intersect at a 90 degree angle
:D brainliest?
Step-by-step explanation:
This is not a linear equation!! You have to have 2 variables, y and x in the same equation in order for this to be made into a line.
You can use the equations y=kx for proportional lines or y=mx+b, which is slope-intercept form.
For example, y=2x-4.
Sorry I can't do more.