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jawab : bayangan -1 = 2x+7
⇔2(-1)+7
⇔5
0=2(0)+7
⇔7
1=2(1)+7
⇔9
4=2(4)+7
⇔15
5=2(5)+7
⇔17
2. Bentuk f(x) =2x^2 -5
tentukan bayangan {-3, 2, -1, 0, 1, 2, 3}
jawab : 2x²-5
bayangan -3 = 2x²-5
⇔2(-3)²-5
⇔13
-2 =2(-2)²-5
⇔3
-1=2(-1)²-5
⇔-3
1=2(1)-5
⇔3
2=2(2)²-5
=3
3=2(3)²-5
⇔13
3.Bentuk f(x) =x^2 + 4
tentukan bayangan {-4, -2, 0, 2, 5, 6}
jawab : x²+4
bayangan -4=(-4)²+4
⇔12
-2=(-2)²+4
⇔8
0=(0)²+4
⇔4
2= (2)²+4
=8
5=(5)²+4
=29
6=(6)²+4
⇔40
4.Bentuk f(x) =4x +5
tentukan bayangan {1, 2, 4, 6, 8}
jawab : 4x+5
bayangan 1= 4(1)+5
⇔9
2=4(2)+5
=13
4=4(4)+5
⇔21
6=4(6)+5
⇔29
8=4(8)+5
⇔37