Question

Persamaan garis yang melalui titik (2,3) dan (-1,4) adalah..........

Answer 1

₁Titik (2,3) dan (-1,4)
Persamaan :

y -y₁   =  x -x₁
y₂ -y₁      x₂ -x₁

y -3  =  x -2
4 -3    -1 -2

y -3 = x -2
  1      -3

-3(y -3) = x -2
-3y +9 = x -2
-3y = x -2 -9
-3y = x -11
x +3y -11 = 0

Itu jawabannya.

Answer 2

Diket titik (2,3) = x1 = 2 , y1 = 3
titik (-1,4) = x2 = -1 , y2 = 4

(y - y1)/(y2-y1) = (x-x1)/(x2-x1)
(y-3)/(4-3) = (x-2)/(-1-2)
(y-3) = (x-2)/-3
3y-9 = x-2
x-3y+7=0