Diketahui f (x)= 5x-3. jika f (a)= -8 tentukan nilai a

[tex]f(x) = 5x - 3 \\ f(a) = 5a - 3 = - 8 \\ - > 5a = - 8 + 3 = - 5 \\ - > a = \frac{ - 5}{5} = - 1[/tex]

f(x)=5x-3
f(a)=-8
setiap x diganti -8
jadi:
f(a)=5.(-8)-3
     =-40-3
     =-43
insyaALLAH