Question

Could someone check these for me?
Solve equation by substitution.
{2x+y=-11
{3x-4y=11
Ans: (3,5)

Solve system by using elimination.
{2x+6y=-12
{5x-5y=10
Ans:(2,1)

What is the solution to
{-3x-2y=-2
{9x+6y= -9
Ans: No solutions (I was really unsure about this one.)

Thanks. :]

Answer 1

@undeadknight26

Answer 2

1. Wrong.
2. Wrong.
3. Correct.

Answer 3

Oh, sorry I actually put in the wrong number for the second question. I meant (-2,0), and the first one I'm guessing is (-3,-5)?

Answer 4

You are now correct for the first one.
You are still wrong for the second one.

Answer 5

Is it backwards? should it be (5,3)?

Answer 6

No, you are correct for the first one, just not the second one.

Answer 7

Oh, well for the second one is it backwards? or is it the wrong signs?

Answer 8

do you still need my help?

Answer 9

The second one you put it backwards, it is supposed to be (0, -2).

Answer 10

I'm fine now, thanks to Opcode, sorry for the inconvenience.

Answer 11

not a problem

@Opcode thanks was away from screen

Answer 12

No problem, glad to be of help.