Question

How do you write an equation of a line through (5 -2), perpendicular to x=0?

Answer 1

`y = -2`

Explanation:

`x = 0` is a vertical line - it is the y-axis.
`y= 0` is a horizontal line. - it is the x-axis

The line perpendicular to `x=0` will therefore be a horizontal line.
As it passes through the point `(5, -2)` it has the y-value -2.

It crosses the y-axis at -2.

Its equation is `y = -2`