Question

Choose the equation of the vertical line that passes through the point (2, 4).
A)x=4
B)x=2
C)y=2
D)y=4

Answer 1

vertical line means the slope = 0

Answer 2

therefore y = mx+b where m=0,
substitute the x = 2 and y = 4
then you have
4=(0)(2)+b
b=4

Answer 3

that means the y-int=4