Question

Find the equation of the line that is perpendicular to the line x = −5 and passes through the point (1, π).
A) y = π
B) y = πx
C) y = 1/5πx
D) y = −5πx

Answer 1

The line x = -5 is a vertical line, therefore the line perpendicular to this line is the horizontal line of the form y = a.

We know that it passes through the point (1, π) → x = 1, y = π.

Therefore we have answer: A) y = π.