A. g(-7) = 5(-7) - 2 = -37 B. g(10) = 5(10) -2 = 48 C. f(10) = 48 f(-7) = -37, maka
48 - (-37) = 85
Cara mencari rumus fungsi:
g(3) = 3a + b = 13 g(-2) = -2a +b = -12 ------------------------------- - 5a = 25 a = 5 Cara mencari b: Gunakan salah satu persamaan, lalu substitusikan: 5(3) + b = 13 b = 13 - 15 b = -2
g(x) = 5x - 2
maka:
A. g(-7) = 5(-7) - 2
= -37
B. g(10) = 5(10) -2
= 48
C. f(10) = 48
f(-7) = -37, maka
48 - (-37) = 85
Cara mencari rumus fungsi:
g(3) = 3a + b = 13
g(-2) = -2a +b = -12
------------------------------- -
5a = 25
a = 5
Cara mencari b: Gunakan salah satu persamaan, lalu substitusikan:
5(3) + b = 13
b = 13 - 15
b = -2