Question

Choose the equation of the line passing through the point (-3, -1) and perpendicular to y =1/2 x + 3.

y = -2x - 7

y = -2x +5

y = 2x + 5

y = 2x - 7

Answer 1

y =1/2 x + 3.

m = 1/2

perpendicular = - 1/m = -2
y =-2 x + b.

now you can choose
y = -2x - 7
y = -2x +5

y =-2 x + b.
(-3, -1)
-1=-2*(-3)+b
-1 = 6 + b
b = -7

y = -2x - 7

Answer 2

don't just give the answer, walk them through the problem