Question 179327
Plug the answers into your equation,
{{{3x-2y=-19}}}
Whichever set gives you -19 as an answer on the left side is the correct solution.
Here would be data set 1 (2,-5),
{{{3x-2y=-19}}}
{{{3(2)-2(-5)=-19}}}
I'll leave it to you to work out the left hand side. 
Please re-post if you get stuck or need more help.