Question

The lines below are perpendicular. If the slope of the green line is -8, what is slope of the red line?

http://media.apexlearning.com/Images/200706/18/c817aaf3-1699-431d-b875-0f827d8526bc.gif

m=

Answer 1

if the lines are perpendicular, it means that when you multiply the slope of line 1 and slope of line 2, it will equal to -1.
\[m_{1} \times m _{2} = -1\]

Answer 2

so the answer is -1 ?

Answer 3

@UsukiDoll do you know ?

Answer 4

not quite

Answer 5

okay so what do you do after ?

Answer 6

If we had two parallel lines with a slope of -8 then the slope will still be the same. But this time we're given two perpendicular lines so at one point, two lines will intersect.