SOMEONE HELP The matrix is used to solve a problem. Which of the following would be a solution to the problem?

[3 −1 + 9]
[2 +1 −4 ]

(1,0)
(0,1)
(5,5)
(1,5)

(1, -6)

Step-by-step explanation:

I haven't used matrix in a while lol so this could be wrong

But if we convert it into standard form, that should be

3x - y = 9

2x + y = -4

We can eliminate the y value by adding the two equations together.

so 5x = 5, or x = 1.

Using that value, 2(1) + y = -4, y = -6.

I guess that isn't a proper answer but my answer is ( 1, -6) which fits the given equations.

I prob just forgot how to use matrixes

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

the correct answer is 1: 2

step-by-step explanation:

hope this your welcome : )