B. Menentukan titik potong sumbu Y
1. f(x) = 4x - 2
2. f(x) = (1/2)x - 4
3. f(x) = 3x - 1 - 3
4. f(x) = (1/3)x - 3
Jawaban :
menentukan titik potong sumbu Y, x = 0
1. f(x) = 4x - 2
f(0) = 40 - 2
f(0) = 1 - 2
f(0) = - 1
maka, titik potong sumbu Y = (0, -1)
2. f(x) = (1/2)x - 4
f(0) = (1/2)0 - 4
f(0) = - 4
maka, titik potong sumbu Y = (0, -4)
3. f(x) = 3x - 1 - 3
f(0) = 30 - 1 - 3
f(0) = 3- 1 - 3
f(0) = 1/3 - 3
f(0) = 1/3 - 9/3
f(0) = - 8/3
maka, titik potong sumbu Y = (0, - 8/3)
4. f(x) = (1/3)x - 3
f(0) = (1/3)0 - 3
f(0) = 1 - 3
f(0) = - 2
maka, titik potong sumbu Y = (0, - 2)
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