Fungsi f ditentukan dengan rumus f (x)=mx+n. Jika f (2)-f (4)=-6, maka nilai f (7)-f (3)

Rumus = f(x) = mx + n
Jika,
f(2) - f(4) = -6
(2m + n) - (4m + n) = -6
2m + n - 4m - n = -6
2m - 4m + n - n = -6
-2m = -6
m = 3

Maka,
f(7) - f(3)
= (7m + n) - (3m + n)
= 7m + n - 3m - n
= 4m

Jadi,
f(7) - f(3)
= 4m
= 4(3)
= 12

Jadi, f(7) - f(3) sama dengan 12