Neither (1, 1) nor (-1, 4) is a solution. Option C
To determine if the coordinates are solution to the inequality, we have to substitute the values of the x and y coordinates.
Then, we have that;
2x+5y<7
For (1,1)
x = 1
y = 1
Substitute the values
2(1) + 5(1) < 7
2 + 5 < 7, this is false
(-1,4)
The value of x = -1 and y = 4
2(-1) + 5(4) < 7
-2 + 20<7, this is false