Review Unit 4 Function Operations

Given several values for the functions f(x), g(x), and h(x) in the table, which equation best describes the relationship between the 3 functions?

• h(x) = f(x) - g(x)

• h(x) = f(x) + g(x)

• h(x) = g(x) - f(x)

• h(x) = g(x) + f(x)

Complete the table of values and use finite differences to determine if h(x) is a linear, quadratic, or cubic function and then write h(x).

• None of these

Determine the type of function and the function rule for h(x) = f(x) - g(x).

• linear; h(x) = -15x - 1

• linear; h(x) = -4x - 2

• -9

• 0

• 3

• -15

• 0

• -5

• -1

• 5

• -14

• 0

• -4

• -24

Look at the functions below and find h(x) = f(x) • g(x)? f(x) = 8x - 4 g(x) = 2x - 3 Fill in the blank: h(x) =