tentukan persamaab garis yg melalui pasangan titik berikut (2,1) dan (3,2)

Kelas 8 Matematika
Bab Persamaan Garis

(y - y1)/(y2 - y1) = (x - x1)/(x2 - x1)
(y - 1)/(2 - 1) = (x - 2)/(3 - 2)
(y - 1)/1 = (x - 2)/1
y - 1 = x - 2
y = x - 2 + 1
y = x - 1

Rumus : y-1/y2-y1 = x-x1/x2-x1

y-1/2-1 = x-2/3-2
y-1-1 = x-2/1
-1(x-2) = 1(y-1)
-1x+2 = 1y-1
-1x = 1y-1-2
-1x = 1y-3
atau -1x-1y+3 = 0

semoga membantu:)