Line EF has two points 6,5 and 0, -4 find the slope m = rise/run = (5 - -4)/ (6-0) = 9/6 = 3/2
y = 3/2 x +b sub in ONE of the points to calc 'b'
5 = 3/2(6)+ b
b = -4 equation of line in 'slope intersecpt form' is now y = 3/2 x -4
re-arrange in to form requested y - 3/2x +4 = 0 since you need all integers, multiply thru by 2
2y - 3x +8 = 0 you can take it from here......