fungsi f ditentukan oleh f(x)=ax+b.jika bayangan dari-3 adalah -15 dan bayangan dari 3 adalah 9, tentukan nilai dari f(-2)+f(2).

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f(-3)=-3a+b=-15
f(3)=3a+b=9
      -6a =-24
        a=4
        b=-3
f(-2)= -11
f(2)=5   
f(-2)+f(2)= -6
koreksiin klo salah