Evaluate Functions

Front

What is a function?

Back

A function is a relation between a set of inputs and a set of possible outputs where each input is related to exactly one output.

Front

What does it mean to evaluate a function?

Back

To evaluate a function means to find the output value when a specific input value is substituted into the function.

Front

If g(x) = 11 - x, what is g(4)?

Back

g(4) = 11 - 4 = 7.

Front

If f(x) = x + 3, what is f(-2)?

Back

f(-2) = -2 + 3 = 1.

Front

What is the output of g(x) = 11 - x when x = -7?

Back

g(-7) = 11 - (-7) = 18.

Front

Evaluate f(0) if f(x) = 2x + 1.

Back

f(0) = 2(0) + 1 = 1.

Front

What is the output of f(x) = x^2 when x = 3?

Back

f(3) = 3^2 = 9.

Front

If h(x) = 3x - 5, what is h(2)?

Back

h(2) = 3(2) - 5 = 1.

Front

What is the output of f(x) = 4x + 2 when x = -1?

Back

f(-1) = 4(-1) + 2 = -2.

Front

If k(x) = x/2 + 4, what is k(8)?

Back

k(8) = 8/2 + 4 = 8.