"direkt variashun"=krat term for y=k1*x
or sumtimes it meen y=k1*x +k2
both be strate line
??????? did yu tri tu sae point=(2,10) is on the line ?????????
if yu assume line also go thru (0,0),
deltax=2, deltay=10, slope=deltay/deltax=2/10=0.2
so y=0.2x
then yu wast point at y=20...20=0.2x, so x=20 / 0.2,
x=100