Cassandra111111
Cassandra111111
11-02-2017
Mathematics
contestada
y=x+4 y=-2x-2 solve for x and y
Respuesta :
apologiabiology
apologiabiology
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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