Find the exact value of the following expression without using a calculator. Note: Enter an exact simplified answer with no decimals. Use pi for r if necessary.
Enter none if there is no answer.

Find the equation of a line that is perpendicular to line g that contains (p, q). coordinate plane with line g that passes through the points negative 3 comma 6 and 0 comma 5 3x − y = 3p − q 3x + y = q − 3p x − y = p − q x + y = q − p