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

Answer 1

Can u find the slope of the perpendicular line?

Answer 2

It doesn't say, just that

Answer 3

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

Answer 4

Ok any how the answer is A

Answer 5

No, what is m1 and m2 in this equation?

Answer 6

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

Answer 7

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