Function Concepts Unit 2 iReady Alg Pre Test

Front

What is a function?

Back

A function is a relation that assigns exactly one output for each input. In other words, for every x-value, there is one and only one corresponding y-value.

Front

What is the definition of domain in a function?

Back

The domain of a function is the set of all possible input values (x-values) that the function can accept.

Front

What is the definition of range in 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 can you determine if a mapping is a function?

Back

A mapping is a function if no x-value is paired with more than one y-value. If any x-value corresponds to multiple y-values, it is not a function.

Front

What is the equation for Juanita's monthly cell phone bill if she uses x minutes of airtime?

Back

C = 0.20x + 15, where C is the total cost.

Front

What is the characteristic of a linear function?

Back

A linear function is represented by a straight line on a graph.

Front

What does it mean for a relationship to be 'not a function'?

Back

A relationship is 'not a function' if at least one input (x-value) is associated with more than one output (y-value).

Front

What is an example of a function?

Back

An example of a function is f(x) = 2x + 3, where each x-value has a unique y-value.

Front

What is an example of a relation that is not a function?

Back

An example of a relation that is not a function is {(1, 2), (1, 3)}, where the input 1 corresponds to two different outputs.

Front

What is the graphical representation of a function?

Back

The graphical representation of a function is a curve or line that passes the vertical line test, meaning no vertical line intersects the graph at more than one point.