Luka équation ya ligne oyo epesami ba points mibale.
 Ba points mibale oyo epesami ezali (1,2) na (3,5). Ya liboso, tokokuta pente `m` ya ligne na kosalelaka formule, `m = (y2 - y1) / (x2 - x1)`, esika (x1,y1) ezali point ya liboso, pe (x2,y2) . ezali likambo ya mibale. Botia ba valeurs ya ba points na formule : `m = (5 - 2) / (3 - 1)` oyo epesaka `m = 3/2`. Na sima, tokosalela forme point-pente pona koluka équation ya ligne. Forme ya point-pente epesami na `y - y1 = m(x - x1)`, esika m ezali pente, mpe (x1,y1) ezali moko ya ba points mibale oyo epesami. Tokoki kosalela point moko to mosusu, to pona point ya liboso, (1,2) pona ko substituer na formule : `y - 2 = (3/2)(x - 1)`. Ko simplifier epesaka : `y - 2 = (3/2)x - 3/2`, kobakisa 2 na ngambo mibale epesaka : `y = (3/2)x - 3/2 + 2`. Na suka, sima ya ko simplifier ba termes constants, tozali na équation ya ligne na forme ya pente-intercept : `y = (3/2)x + 1/2`. Equation ya ligne oyo elekaka na ba points (1,2) na (3,5) ezali `y = (3/2)x + 1/2`.