The equation of the line is: y=2/-5x + 3 3/5
With

we have

The vector field evaluated over this parameterization is

so the line integral is


you need to find to find the value of x and y.
2x>(-15-5y)
x>(-15-5y)/2
now put this in to other equation and solve for y and then put the y value in and find x.