Which of the following pairs is a solution to the following system of equations: - x + 3y = 9 2x + 5y = 4 A. (- 15, - 2) B. (- 1

Question

3 years ago

6

5, 2) C. (- 3, 2) (3, - 2) E. (15, 2)

1 answer:

vivado [14] · Answer 1 · 2022-06-23T14:45:54+03:00

Answer: x = -3 y = 2 So (-3,2)

Step-by-step explanation:

- x + 3y = 9 Multiply everything by 2 then add to the second equation.

2x + 5y = 4

<u>-2x +6y =18 </u> then 2x-2x=0 Add the other terms and solve for y.

11y = 22 divide both sides by 11 yo get y = 2 Substitute that into either one and solve for x.

2x + 5y = 4

2x + 5(2) = 4

2x + 10 = 4 subtract 10 from both sides 2x = 4 -10

2x = -6 so divide both sides by 2 to get x = -3