Find the equation of a line that is perpendicular to the lin

Find the equation of a line that is perpendicular to the line x=19 and contains the point (-7,-9)

Solution

a line that is perpendicular to the line x=19

line perpedicular to line x=19 would be parallel to y axis and would be of the form y =k

we have one point ( -7 , -9)

y = -9 (equation of line)