Question

Which ordered pair (x,y) is the solution to the given system of linear equation?

Answer 1

(-1,0)

Explanation:

Answer 2

(x, y) = (-1, 4)

Explanation:

3x + 3y = -3 (1)

-2x + y = 2 (2)

From (2)

y = 2 + 2x

Substitute y = 2 + 2x into (1)

3x + 3y = -3 (1)

3x + 3(2 + 2x) = -3

3x + 6 + 6x = -3

9x + 6 = -3

9x = -3 - 6

9x = -9

x = -9/9

x = -1

Substitute x = -1 into (2)

-2x + y = 2 (2)

-2(-1) + y = 2

-2 + y = 2

y = 2 + 2

y = 4

(x, y) = (-1, 4)