Question

HELP!! GIVING OUT MEDALS ;) NEED ANSWER NOW.
Are the graphs of the lines in the pair parallel? Explain.

y = 6x + 9
27x – 3y = –81

A.Yes, since the slopes are the same and the y-intercepts are different.
B.Yes, since the slopes are the same and the y-intercepts are the same.
C.No, since the slopes are different.
D.No, since the y-intercepts are different.

Answer 1

Alright so basically to figure out if two linear equations are parallel we put them in y=mx+b form and compare there slopes.

Answer 2

The first equation is already in y=mx+b but we need to make the second one into the form

Answer 3

To do this we must get y by itself

Answer 4

First, subtract 27x to the other side to be
\[-3y=-27x-81\]

Answer 5

y is yet by itself and in order to do this we need to divide each side by -3 to get
\[y=9x+27\]

Answer 6

To see if these lines are parallel we look at the mx in y=mx+b
If the mx are equal to each other they are parallel

Answer 7

In this case... they are not.

Answer 8

@gxldmouth Gucci?

Answer 9

thaaank you .

Answer 10

You're welcome ^-^

Answer 11

wait is it C or D ?