Question

Which of these do not represent a linear function?

Table 1; x: -4, -2, 0, 2, 4 f(x): -10, -8, -6, -4, -2

Table 2: x: 4, -2, 0, 2, 4 f(X): 256, 16, 0, 16, 256

Table 3: x: -4, -2, 0, 2, 4 f(x): -8, -4, 0, 4, 8

Table 4: x: -4, -2, 0, 2, 4 f(x): -1, 1, 3, 5, 7

Answer 1

Table 2: x: 4, -2, 0, 2, 4 f(X): 256, 16, 0, 16, 256

This table does not represent a linear function because the output values are not changing at a constant rate as the input values change.