For each ordered pair, determine whether it is a solution to
=−4x7y19.
, x y
Is it a solution?
Yes No
(3,−1) Yes no?
(−4,−5) Yes no?
(−6,2) Yes no?
(9,6) Yes no?
There is no equation here, so we can't say if the x,y pairs are solutions!
+8 
