Answer
No, it is not a solution.
Work Step by Step
To solve for this you input (-1,4) into the equation y<2x+5, replacing -1 for the x and 4 for the y.
(4)<2(−1)+5
Then, solve:
4<3
This now reads 4 is less than three which cannot be true which means that (-1,4) is not a solution of the inequality.