Question 185461
4x - y = 4     (0,-4)  (1,0)  (2,-3)
The way to prove if these points are on this line. 
Replace the x & y values & solve the equation.
4*0-(-4)=4
0+4=4
4=4 (0,-4) is on this line.
4*1-0=4
4-0=4
4=4 (1,0) is also on this line.
2*2-(-3)=4
4+3=4
7=4 not a solution thus this point is NOT on the line.