Question

Select the equations that are parallel and perpendicular to y = x + 5 and that pass through the point (-2, -1).

parallel: y = -x - 1
perpendicular: y = x + 2

parallel: y = x - 1
perpendicular: y = -x + 1

parallel: y = x + 1
perpendicular: y = -x - 3

parallel: y = 2x - 2
perpendicular: y = -2x - 1

Answer 1

hint - first find the gradient (quite obvious)
then put it in the formula y-y1=m(x-x1)
for perpindicular thge gradient would be different - (remember to change the sign and flip)

hope that would help you