Question

dane sa punkty ktore leza na prostej A=(2;-1) ,B=(-3;4), napisz rownanie tej prostej

Answer 1

(y+1)(-3-2)-(4+1)(x-2)=0

-3y-2y-3-2-(4x-8+x-2)=0

-3y-2y-3-2-4x+8-x+2=0

-5y-5=5x-10/:5

-y-1=x-2

-y=x-2+1

-y=x-1/*(-1)

y=x+1