Question

F(x) = ax+b jika f(1)=6 dan f(-1)=2. Maka nilai a dan b secara berturut adalah?

bantuin plis

Answer 1

F(1) =>  a + b = 6
f(-1)=> -a + b = 2 _ elimiasi
               2b  = 4
                 b  = 4/2
                 b  = 2
subtitusikan
a + b = 6
a + 2 = 6
   a    = 6 - 2
   a    = 4
bilai a dan b adalah
a = 4
b = 2

Answer 2

F(x) = ax + b

f (1) = 6
f (1) = a(1) + b = 6
a + b = 6

f (-1) = 2
f (-1) = a(-1) + b = 2
-a + b = 2

a + b = 6
-a+ b = 2
_________  _
2a     = 4
a = 4/2
a = 2

a + b = 6
2 + b = 6
b = 6 - 2
b = 4

Semoga bermanfaat.. ^_^ !!