Question

(2)I'm stuck pls help me with my algebra work show all ur steps

`y=9x+2`

-2x+7y=-47

Answer 1

x = -1

y = -7

Explanation:

y=9x+2`

-2x+7y=-47 ==> isolate y

Equation 1: 7y = 2x - 47 ==> add 2x on both sides

Equation 2: y = 9x + 2

7 * (y = 9x + 2)

Equation 3: 7y = 63x + 14

Equation 1: 7y = 2x - 47

Subtract equation 1 from equation 3:

7y = 63x + 14

- (7y = 2x - 47)

7y-7y = 63x-2x + 14-(-47)

0 = 61x + 14 + 47

0 = 61x + 61 ==> solve for x

-61 = 61x ==> subtract 61 on both sides to isolate x

x = -1

Now solve for y

y = 9(-1) + 2 ==> plugin -1 for x in y=9x+2`

y = -9 + 2 ==> simplify

y = -7

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