Question

Line n is perpendicular to the y-axis. If the line contains point (0, -4), what is the equation of line n ?

Answer 1

y=0x - 4

Explanation:

perpendicular to the y-axis means parallel to the x-axis.

that would be a horizontal line and they have no slope. so m=0

(0, -4) is the y-intercept since the y intercept is when x is zero.

b=-4

y=mx+b

y=0x - 4