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:)