Question

Suatu fungsi didefinisikan dg f(x)=ax+b,dg x bilangan bulat.jika f(4)=29,dan f(3)=21,mka nilai f(5)+f(-2) adalah. pake cara ya sekarang

Answer 1

F(x)=ax+b
f(4)=4a+b=29
f(3)=3a+b=21 _
      a      = 8

4(8)+b=29
32+b=29
      b=29-32
      b=(-3)

f(5)=8(5)+(-3)=37
f(-2)=8(-2)+(-3)=(-19)
f(5)+f(-2)=37+(-19)=18