4x-3y+12=0 konvert tu y=(4/3)x +4
4x-3y=-18 become y=(4/3)x -6
vertikal distans tween 2 lines=10
slope=4/3=1.333
yuze invers tangent, slope=53.130 deg
draw perpend line tu 1 sloped line & yu get rite triangel
distans=diagonal*kosine(53.12 deg)=10*kosine(53.12)=10* 0.60=6