fungsi g dinyatakan g (x)= qx+r nilai g(3)=-7 dan g(5)= 1 nilai g(9) adalah

Fungsi

g(X) = qX + r
g(3) = 3q + r = -7
g(5) = 5q + r = 1

3q + r = -7
5q + r = 1
_________ _
-2q = -8
q = -8/-2
q = 4

3q + r = -7
3 x 4 + r = -7
12 + r = -7
r = -7 - 12
r = -19

g(9) = 9q + r
g(9) = 9 x 4 + (-19)
g(9) = 36 - 19
g(9) = 17

*semoga membantu. sukses selalu ^_^

g(x) = qx + r
g(3) = q(3) + r = -7 ....... persamaan 1
g(5) = q(5) + r = 1 ....... pers.2

3q + r = -7
5q + r = 1 (eliminasi)
-> -2q = -8
q = 4

3q + r = -7
3(4) + r = -7
->r = -7 - 12
= -19

Maka, g(9) = 4(9) + (-19) = 36-19 = 17

Semoga membantu.. maaf kalo salah