" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
g(5) = 5a + b
-32 = 5a + b
b = -32 - 5a ... (1)
g(-2) = -2a + b
17 = -2a + b
b = 17 + 2a ... (2)
dari persamaan (1) dan (2), diketahui:
-32 - 5a = 17 + 2a
-32 - 17 = 2a + 5a
7a = -49
a = -7
nilai a diatas, dimasukkan ke persamaan (2), sehingga menghasilkan:
b = 17 + 2a = 17 + (2 x -7) = 17 + (-14) = 3
g(x) = ax + b
g(12) = 12a + b = (12 x -7) + 3 = -84 + 3 = -81