Question

Solve the system of equations using the substitution method
12x-4y=10
-3x-y=6

Answer 1

the wolfram alpha thing didn't work on this one:( @misty1212

Answer 2

put a comma between them

Answer 3

look at your 2nd equation....now solve for y

Answer 4

i did

Answer 5

http://www.wolframalpha.com/input/?i=12x-4y%3D10%2C+-3x-y%3D6
worked for me

Answer 6

ok thanks! I dunno what I did differently

Answer 7

-3x - y = 6
-3x - 6 = y

now sub -3x - 6 in for y in the other equation. Then solve for x. Once x is found, sub that back into either equation to find y

Answer 8

I typed that into my homework and it said it was incorrect :(

Answer 9

so -3x - (-3x-6) =6

Answer 10

oh now iget it thereis no solution

Answer 11

ok...let me show you
we know that y = -3x - 6
now sub that into your 1st equation
12x - 4y = 10
12x - 4(-3x - 6) = 10
can you finish ?

Answer 12

thanks guys!

Answer 13

the homework things said correct

Answer 14

(-7/12, - 17/4)

Answer 15

so yup no solution, thanks!

Answer 16

there is a solution

Answer 17

Yw.

Answer 18

@allibricker12 gave the correct solution....(-7/12, - 17/4)