Question

Solve using substitution:
2x + y = 3
-3y =12 − x
Answer

(3, -3)

(4, -1)

No solution

Infinitely many solutions

Answer 1

I prefer not to use substitution.
If you have to though, you can take the given points and put them in for x and y in your equations.

Answer 2

Rearrange one of the eq'ns, and then 'substitute' it for one of the variables of the other eq'n.

Answer 3

If you need a more detailed explanation, or need to double check your work, call out.

Answer 4

ii dnt kn hw to do it

Answer 5

Take the given points (3, -3).
3 is your x and -3 is your y.
Plug that in to 2x + y = 3.
2(3)+(-3)=3
6-3=3
3=3

Answer 6

what if this was a problem
Solve using elimination:
-5x = 3y − 7
10x + 6y = 14
Answer

(-4, 9)

(4, -1)

Infinitely many solutions

No solution

Answer 7

For elimination, you need to either get rid of the x or the y