Question

Which equation represents a line that is perpendicular to y = 2x-5 and passes through the point (6,12)?

Answer 1

Perpendicular = opposite sign and reciprocal slope
Original slope: 2
Perpendicular slope: -1/2
Y = -1/2x + b
12 = -1/2(6) + b
12 = -3 + b, b = 15

Solution: y = -1/2x + 15