In the xy plane, does the point(a, b) lie above the line y=x?
used substitution method
given that y = x
1) a=2, no mention of b
so the point (a,b) can fall either below the line or above the line y=x
so NS .. hence Options A & D are gone.
2) b = a+2
so take any value a, b will be greater than a by 2...
hence this point will always be above the line... Hence B....
Note: Give me kudos if my approach is right , else help me understand where i am missing.. I want to bell the GMAT Cat
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