????????????????? "ordered pare" ???????????
me assume that stuf shood be a strate line, so equashun shood be
y=-(1/2)x +1
& yu want line tu go thru point=(4,2)
slope=-0.5
projekt line from x=4 tu x=0...deltax=-4
deltay=slope*deltax=(-0.5)*(-4)=+2
thus, y at x=0 be 2+2=4
equashun...y=-0.5x+4