????????????????????????? "passisngsisiekseisgds thru" ?????????????????
a line GO THRU a point
point=(-2,2)
line....-x+2y=-20 become 2y=x-20...or y=(x/2) -10
slope=0.5
projekt line from x=-2 tu x=0...deltax=2, so deltay=slope*deltax=2/2=1
y=2+deltay=2+1=3
thus, line go thru point=(0,3)
y=0.5x+3