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11-02-2017
Mathematics

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y=x+4 y=-2x-2 solve for x and y

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11-02-2017

set equal since both equal y anwway

x+4=y=-2x-2
x+4=-2x-2
add 2x both sides
3x+4=-2
minus 4 both sides
3x=-6
divide 3
x=-2

sub back

y=x+4
y=-2+4
y=2

x=-2
y=2
(x,y)
(-2,2)

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