Question

Are the following lines parallel, perpendicular, or neither?

y = -7x + 12
- 7y = x + 56

Answer 1

check their slopes
if the slopes are the same, they're parallel
if one slope is the negative inverted of the other one...then they're perpendicular

if none of those, then neither

Answer 2

ion know what the slope is.

Answer 3

well... if you solve the 2nd equation for "y"
what would it look like?

Answer 4

y=x-8

Answer 5

i think

Answer 6

hmmm you may want to brush up a bit on your linear simplification first http://www.youtube.com/watch?v=n3FbQGGKVfc

then you'd find the slopes

Answer 7

that helped none.