tentukan persamaan garis lurus jika diketahui informasi berikut ! a. melalui titik (1,6) dan (7,4)

melalui titik (1, 6) dan (7, 4)

x1 = 1
y1 = 6
x2 = 7
y2 = 4

(y - y1) / (y2 - y1) = (x - x1) / (x2 - x1)
(y - 6) / (4 - 6) = (x - 1) / (7 - 1)
(y - 6) / (-2) = (x - 1) / (6)
-3(y - 6) = x - 1
-3y + 18 = x - 1
-3y = x - 1 - 18
-3y = x - 19
x + 3y - 19 = 0

mencari persamaan garis

(y - y₁) / (y₂ - y₁) = (x - x₁) / (x₂ - x₁)
(y - 6) / (4 - 6) = (x - 1) / (7 - 1)
(y - 6) / -2 = (x - 1) / 6
6 (y - 6) = -2 (x - 1)
6y - 36 = -2x + 2
2x + 6y - 36 - 2 = 0
2x + 6y - 38 = 0
x + 3y - 19 = 0