f(x)=ax+b jika f(4)=5 dan f(-2)=7
Matematika
silvianacresia
Pertanyaan
f(x)=ax+b jika f(4)=5 dan f(-2)=7
1 Jawaban
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1. Jawaban marciasoen
f(4)=5 ------> 4a + b =5
f(-2)=7------>-2a + b=7
------------------------------------ -
6a =12
a=12/6
a=2
4a+b=5
4(2)+b=5
8+b=5
b=5-8
b=-3
fx =ax +b
fx = 2x + -3
f(x)=2x-3