Question

What is the solution of the system of equation.

Answer 1

Explain please.

Answer 2

Plug the values given and see if they work

Answer 3

ex: for -3x-4y-3z=7, let x = 5, y = -2, and z = 7 ... and see if it is true. If not, try answer b

Answer 4

Ok, hold on

Answer 5

*oops, it should = -7

Answer 6

I don't think it's answer B

Answer 7

nope

Answer 8

Would it be 'No Solution'?

Answer 9

Yes

Answer 10

Well that makes sense. I tried plugging in all of them and none seemed right.

Answer 11

Thanks for the help

Answer 12

You could have also solve it the usual way

Answer 13

But since they give you the solutions, you can check them

Answer 14

-3x - 4y - 3z = -7 -->(3)
2x - 6y + 2z = 3 -->(-2)
---------------------
-9x - 12y -9z = -21
-4x + 12y - 4z = -6
---------------------add
- 13x - 13z = - 27

2x - 6y + 2z = 3
5x - 2y + 5z = 9 -->(-3)
------------------
2x - 6y + 2z = 3
-15x + 6y - 15z = -27
------------------add
-13x - 13z = - 24

-13x - 13z = -27
-13x - 13z = -24 -->(-1)
------------------
-13x - 13z = -27
13x + 13z = 24
----------------add
0 = -3 (INCORRECT)

you are both correct....there is no solution