???????????????? yu want a streat line tween 2 points ??????????????
points=(-3,-6) & (3,2)
deltax=6, deltay=8, slope=deltay/deltax=8/6=4/3=1.3333333333333333333...
y=(4/3)x+konst
projekt line from x=-3 tu x=0...deltax=3, deltay=slope*deltax=(4/3)*3=4
thus, y (at x=0)=-6+4=-2
y=(4/3)x-2