Question

Diketahui rumus fungsi f(x)=ax+b. jikaf(4)=14 dan f(-1), maka nilai g(10) adalah

Answer 1

f(4) = a4 + b = 14
f(-1)=a(-1) + b = a
______________-
= 5a = 14 - a
= 5a + a = 14
= a = 14 : 6
= 2,3

f(4) = 4a + b = 14
= 4 x 2,3 +b = 14
=9,2 + b = 14
= b = 14 - 9,2
=4,8

f(10) = 2,3 x 10 + 4,8
= 27,8