Question

which pair of equations represents perpendicular lines?
a){y=1/2x+2
{y=-1/2x+4
b){y=5x+7
{y=-1/5x+3
c){y=1/5x+2
{y=1/5x+1
d){y=3x+4
{6x+8

Answer 1

what do u think

Answer 2

which numbers in the equations give you the slope?

Answer 3

The answer is (B).
If two lines are perpendicular. The result of multiplying their slopes = -1

Check each case separately:
A: m= 0.5 , -0.5 multiplication: -0.25 (refused)
B: m = 5 , -1/5 multiplication: -1 (our answer)