Question

The following lines are parallel.
2x + 2y = 4 and y = -x + 5
True or false?

Answer 1

Do they have the same slope?

Answer 2

turn 2x + 2y = 4 into slope intercept form

2y = -2x + 4

now divide everything by 2

Answer 3

y=x+3

Answer 4

no...it's y = -x + 2 if yu divide everything by 2

Answer 5

oh haha messed up there.

Answer 6

now look at the coefficient of x of both equation...are they the same?

Answer 7

nope?

Answer 8

wait yes

Answer 9

the x are the same therefore they are parallel

Answer 10

Thanks! Now I know how to find them the next time! :)