Question

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

Answer 1

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)