??????????????? "solv" ???????????
apparentlee yu hav 4 points
maebee em mark out a thang with 4 sides????
for a slope...selekt 2 points, maebee the first 2 points
(-1,1) & (2,3)...line tween em 2 points: deltax=3, deltay=2, dlope=deltay/deltax=2/3
so line from point 1 tu point 2...y=(2/3)x+konst
then get konst bi projekt line tu x=0...deltax=1, so deltay=(2/3), so y=1+2/3=5/3
so that point=(0,5/3)