A table can be represented as x = {2, 3, 4, 5} and f(x) = {4, 6, 8, 10} where each place lines up (e.g., when x = 2, f(x) = 4). What is the function represented by this table?

Question

A. f(x) = 2

B. f(x) = -3x

C. f(x) = 2x

D. f(x) = -3x

E. f(x) = x + 5

Answer 1

C is correct

f(x) = 2x

each x value is 1/2 the f(x) value

each f(x) value = twice the x value = 2x