Write the equation of a line that is perpendicular to x=-6.

Answer 1

Since perpendicular lines are the reciprocal of each other you just have to find the reciprocal of -6 which is 1/6. This makes line x=1/6 perpendicular to line x=-6

Answer 2

x = -6 is the equation of a vertical line.

The line perpendicular, a horizontal, has an equation in the form, y = k.

Any value of k would suffice.