Persamaan garis yang melalui titik P (1,3) dan Q (5,1) adalah?
tolong bantu teman-teman
Jawaban Terkonfirmasi
Formula :
(y – y1)/(y2 – y1) = (x – x1)/(x2 – x1)
(y – 3)/(1 – 3) = (x – 1)/(5 – 1)
(y – 3)/-2 = (x – 1)/4
4y – 12 = -2x + 2
2x + 4y = 14
x + 2y = 7
Y2-y1 / x2-x1 = 1-3 / 5-1 = -2 / 4 = -½