Question

-7y=-15x-42
-7y=-6x+21

solve for x and y

Answer 1

You can use elimination here:

-7y = -15x-42
- -7y= -6x +21
------------------
0 = -9x - 63
63 = -9x
x = -7

Plug back into one of the original eq.

-7y = -15(-7) - 42

y = whatever that comes out to

Answer 2

Subtract equation 2 from equation 1. You will get your answer :)

Answer 3

is y 105

Answer 4

try again

Answer 5

is it -22

Answer 6

try again...


use the force... (since today is May Force)

Answer 7

what do you do to get y

Answer 8

-9

Answer 9

so the order pair (-7, -9) is the intersection of both those lines...