Question

Fungsi f(x) = ax + b
f(1) = 0
f(0) = -2
tentukan :
a. nilai a & b
b. bentuk fungsi
c. f(4)
d. jika f(4) = 10, tentukan nilai a

==terima kasih==

Answer 1

F(x) = ax + b
f(1) = a.1+ b = a + b = 0
f(0) = a.0 +b =       b = -2
 maka nilai a --> a +b = 0
                         a +(-2) = 0
                              a = 2
a. a = 2 dan b = -2
b. f(x) = 2x -2
c. f(4) = 2.4 -2 = 8 -2 = 6
d. f(4) = 10
    f(4) = a.4 -2 = 10
             4a     = 10 +2
                  a = 12/4
                  a = 3

Answer 2

F(1)=a(1)+b=0 → a+b=0
f(0)=a(0)+b=-2 → 0+b=-2
b=-2
a+(-2)=0 → a=2
a=2
b=-2

f(4)=2(4)+(-2)=8-2=6

f(4)=a(4)+b
10=4a+b
4a=10+2
a=12/4=3