Evaluating Functions

Front

What is a function?

Back

A function is a relation that assigns exactly one output for each input from a set of inputs.

Front

What does it mean to evaluate a function?

Back

To evaluate a function means to calculate the output value for a given input.

Front

If f(x) = 2x + 3, what is f(1)?

Back

f(1) = 2(1) + 3 = 5.

Front

What is the domain of a function?

Back

The domain of a function is the set of all possible input values (x-values) for which the function is defined.

Front

What is the range of a function?

Back

The range of a function is the set of all possible output values (y-values) that the function can produce.

Front

How do you find f(-2) if f(x) = x^2 - 4?

Back

f(-2) = (-2)^2 - 4 = 0.

Front

What is the value of f(0) if f(x) = 5x + 1?

Back

f(0) = 5(0) + 1 = 1.

Front

If g(x) = 3x - 7, what is g(4)?

Back

g(4) = 3(4) - 7 = 5.

Front

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

Back

f(-3) = (-3)^2 = 9.

Front

If h(x) = 4x + 1, find h(-1).

Back

h(-1) = 4(-1) + 1 = -3.