Replace x by 5 and y by 2 on both equations, and check if the equalities remain:
2x-3y=4
2(5)-3(2) =4
10-6= 4
4=4 EQUAL
2x+8y= 11
2(5) + 8(2)=11
10 + 16 = 11
26=11
26 is not equal to 11
The ordered pair is NOT a solution to the system of equations.
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