???????????????? passeseseseeinginginginging thru ?????????????????
a line GO THRU a point or thru several points
strate line thru 2 points...(2,9) & (3,5)
deltax=1, deltay=-4
slope=deltay/deltax=-4
y=-4x+konst
projekt line from x=2 tu x=0...deltax=-2, so deltay=slope*deltax=-4*(-2)=+8
thus, y at x=0 be9+8=17
y=-4x +17