Question

What is the intersection of the lines x = -15
and y=5 ?

Answer 1

the point on the plane (-15, 5)

Explanation:

These lines are:

1) a vertical line (x=-15) which implies that all x values of the points that it contains have coordinate x= -15

2) a horizontal line (y=5) which implies that all y values of the points that it contains have coordinate y = 5

Then the intersection must occur at x = -15 and y = 5, that is at the point (-15, 5)