reesejulieann reesejulieann

13-05-2017
Mathematics

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solve for x and y please

solve for x and y please class=

Respuesta :

13-05-2017

X+y=-16
Y=3x
Substitute second equation into the first one
X+3x=-16
Add
4x=-16
Divide
X=-4

Plug into y=3x to find y
Y=3×-4
Y=-12 to check if this is true plug in x and y into first equation
-4+-12=-16
-16=-16 answers hold true :)

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