Which line is perpendicular to y=2x-8
a) 4y+2x=2
b) y=2x-4
c) 3x+2y=-6
d) y=-2x+7

Question

Which line is perpendicular to y=2x-8
a) 4y+2x=2
b) y=2x-4
c) 3x+2y=-6
d) y=-2x+7

anonymous · Answer

Can u find the slope of the perpendicular line?

anonymous · Answer

It doesn't say, just that

anonymous · Answer

If you have two lines with slope m1 and m2, then they are perpendicular if (m1)(m2)=-1.
Did u know this?

anonymous · Answer

Ok any how the answer is A

anonymous · Answer

No, what is m1 and m2 in this equation?

aripotta · Answer

m is slope. perpendicular lines have negative reciprocal slopes to each other. so like, if one line had a slope of 2...the perpendicular line would have a slope of -1/2

aripotta · Answer

after you change the first choice from standard form into slope-intercept form, you'll see that the slope is, indeed, -1/2