Question

Find the equation of a line that is parallel to the line x = 18 and contains the point (-7,9).

The equation of the parallel line is __________?

Answer 1

x = - 7

Explanation:

x = 18 is the equation of a vertical line parallel to the y- axis

A parallel line must also be a vertical line with equation

x = c

where c is the value of the x- coordinate the line passes through

The line passes through (- 7, 9 ) with x- coordinate - 7 , then

x = - 7 ← equation of parallel line