Question

What is the x-coordinate of the soultion y=x+2 y=-x+6

Answer 1

x+2 = -x+6
2x+2 = 6
2x = 4
x = 2

Answer 2

Both equal y to set equal to each other
x+2=y=-x+6
x+2=-x+6
add x both sides
x+x+2=x-x+6
2x+2=0+6
2x+2=6
minus 2 both sides
2x+2-2=6-2
2x+0=4
2x=4
divide both sides by 2
x=2

the x coordinate is 2