Answer:
Yes but there is only one way to check they are an ordered pair.
This is done by using simultaneous equations
ascending line is y = 2x + 9
descending line is y = -2x + 7
The ordered coordinates can be checked ( -4, 1)
2 (-4) + 9(1) = 1
and
-2 (4) +7 (1) = -1
