Question

The graph below shows four lines b, c, d and f.

Write down the equation of the line which is
perpendicular to the line y = 0.

Thank you :)

Answer 1

x=2

Explanation:

y = 0 is the equation of the x axis (horizontal)

We must find a line that is vertical, that is the line b

the line b has x always equal to 2

So the equation of this line is x=2