4.9 Unit 4 Test Review (Functions)

Front

What is a function?

Back

A function is a relation that assigns exactly one output for each input. It can be represented as f(x), where x is the input.

Front

What does it mean for a graph to represent a function?

Back

A graph represents a function if any vertical line drawn through the graph intersects it at most once. This is known as the vertical line test.

Front

Translate to an algebraic expression: '5 times a number increased by 3'.

Back

Front

What is the value of f(1) if f(x) = 2x + 1?

Back

Front

What is the slope-intercept form of a linear function?

Back

Front

How do you find the y-intercept of a function?

Back

To find the y-intercept, set x = 0 in the function and solve for y.

Front

What does the term 'domain' refer to in a function?

Back

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

Front

What does the term 'range' refer to in a function?

Back

The range is the set of all possible output values (y-values) for the function.

Front

If f(x) = -4x + 1, what is f(-11)?

Back

Front

What is the difference between a linear function and a non-linear function?

Back

A linear function has a constant rate of change and graphs as a straight line, while a non-linear function does not have a constant rate of change and can graph as a curve.