tolong ya... makasih.

aku ambil 2 titik ya

Diketahui
(x_{1},y_{1}) = (1,4)
(x_{2},y_{2}) = (3,10)

Ditanya
f(x)

Jawab
[tex] \frac{y-y_{1}}{y_{2}-y_{1}}= \frac{x-x_{1}}{x_2-x_1} \\ \\ \frac{y-4}{10-4}= \frac{x-1}{3-1} \\ \\ \frac{y-4}{6}= \frac{x-1}{2} \\ \\ 2(y-4)=6(x-1) \\ 2y-8=6x-6 \\ 2y=6x+2 \\ y=3x+1 [/tex]

Jadi, f(x) = 3x + 1