Functions Test Review

Front

What is a function?

Back

A function is a relation that assigns exactly one output (y) for each input (x).

Front

What is the domain of a function?

Back

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

Front

What is the range of a function?

Back

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

Front

How do you find the range of a linear function?

Back

To find the range, substitute the domain values into the function and determine the resulting y values.

Front

What does an open circle on a graph indicate?

Back

An open circle indicates that the value does not include that number (use < or >).

Front

What does a closed circle on a graph indicate?

Back

A closed circle indicates that the value includes that number (use ≤ or ≥).

Front

How do you evaluate a function at a specific point?

Back

To evaluate a function at a specific point, substitute the value of x into the function and solve for y.

Front

What does it mean for a function to be increasing?

Back

A function is increasing if, as x increases, y also increases.

Front

What does it mean for a function to be decreasing?

Back

A function is decreasing if, as x increases, y decreases.

Front

What is the formula for a linear function?

Back

The formula for a linear function is typically in the form f(x) = mx + b, where m is the slope and b is the y-intercept.