g(x) = ax + bg(5) = 8g(5) = 5a + b5a + b = 8
g(x) = ax + bg(2) = -1g(2) = 2a + b2a + b = -1
Eliminasi b
5a + b = 82a + b = -1--------------- -3a = 9a = 3
5.(3) + b = 815 + b = 8b = -7
Jadi a = 3 b = -7
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g(x) = ax + b
g(5) = 8
g(5) = 5a + b
5a + b = 8
g(x) = ax + b
g(2) = -1
g(2) = 2a + b
2a + b = -1
Eliminasi b
5a + b = 8
2a + b = -1
--------------- -
3a = 9
a = 3
5.(3) + b = 8
15 + b = 8
b = -7
Jadi a = 3 b = -7
g(5)=a.5+b-------> 5a+b=8
g(2)=a.2+b-------> 2a+b=-1 -
----------------
3a =9
a =9/3
a =3
5a+b=8
5.3+b=8
15+b=8
b=8/15
b=0,34