Question

y=-x+2 and y=-2x+6 ordered pairs ?

Answer 1

Same thing again, you can use substitution, elimination, or matrices.
For this, just use substitution.
-x + 2 = -2x + 6
x = 4
Then plug it back in for y.
y = -x + 2
y = -4 + 2
y = -2
(4, -2)