Question

Find the equation of the horizontal line that passes through the point (2,-4).

Answer 1

y = -4

Answer 2

Find the equation of the vertical line that passes through the point (2,-4).

Answer 3

/-4?

Answer 4

y =-4

Answer 5

y = -4 is the horizontal line (hence you only see y, no x)
x = 2 is the vertical line (here you only see x, no y)

Answer 6

Find the equation of the line that has a slope of -3 and passes through the point (2,-2).