Question

Solve each of the following system of equations by substitution!!!

x-5y=-49
y=-2x+1

Answer 1

x = -4, y = 9

or

(-4, 9)

Explanation:

x - 5y = -49

y = -2x + 1

substitute y for -2x + 1

x - 5(-2x + 1) = -49

x + 10x - 5 = - 49

add 5 to both sides

x + 10x - 5 + 5 = - 49 + 5

x + 10x = -44

11x = -44

divide both sides by 11

11x/11 = -44/11

x = -4

substitute x for -4 in any of the original equations

y = -2x + 1

y = -2 * -4 + 1

y = 8 + 1

y = 9

Answer 2

x = -4, y = 9 or (-4,9)

Explanation:

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