christiefouch christiefouch

11-10-2018
Mathematics

contestada

Solve the system by the substitution method.

X+Y=-3
Y=-4x

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answermepls30 answermepls30

11-10-2018

find it I cannot find it

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jimrgrant1 jimrgrant1

11-10-2018

x = 1, y = - 4

substitute y = - 4x into the other equation

x - 4x = - 3

- 3x = - 3 ( divide both sides by - 3 )

x = 1

substitute x = 1 into y = - 4x ⇒ y = - 4

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