Question

Diketahui f: x tnda panah 4 x - 1
Tentukan nilai fungsi f untuk x = -5, -3, -1, 0 , 2, 4, dan 10

Answer 1

Jika 0 = 4.0-1 = -1 (1,0)
-1 = 4.-1-1 = -5 (-5,-1)
2 = 4.2-1 = 7 (2,7)
-3 = 4.-3-1 = -13 (-3,-13)
4 = 4.4-1 = 15 (4,15)
-5 = 4.-5-1 = -21 (-5,-21)
10 = 4.10-1 = 39 (10,39

Answer 2

Rumus fungsi f(x)=4x - 1
maka:
-5 =  4.(-5) - 1 = -20 - 1 = -21
-3 = 4.(-3) - 1 = -12 - 1 = -13
-1 = 4.(-1) - 1 = -4 - 1 = -5
0 = 4.(0) - 1 = 0 - 1 = -1
2 = 4.(2) - 1 = 8 - 1 = 7
4 = 4.(4) - 1 = 16 - 1 = 15
10 = 4.(10) - 1 = 40 - 1 = 39