Is it a Function? Review for Flashcard

Front

What is a function?

Back

A function is a relationship between two sets where each input (x-value) has exactly one output (y-value).

Tags

CCSS.8.F.A.1

Front

What is the vertical line test?

Back

The vertical line test is a method to determine if a graph represents a function. If a vertical line crosses the graph at more than one point, it is not a function.

Front

Is the following set of values a function? (2, 3), (2, 4), (3, 5)

Back

No, because the input '2' has two different outputs (3 and 4).

Tags

CCSS.8.F.A.1

Front

Is the following set of values a function? (1, 2), (2, 3), (3, 4)

Back

Yes, because each input has exactly one output.

Tags

CCSS.8.F.A.1

Front

What does it mean if a graph is not a function?

Back

It means that at least one input has more than one output.

Front

What is an example of a function?

Back

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

Tags

CCSS.8.F.A.1

Front

What is an example of a non-function?

Back

An example of a non-function is y^2 = x, because for some x-values, there are two corresponding y-values.

Front

How can you tell if a table of values represents a function?

Back

Check if each input (x-value) is paired with only one output (y-value).

Tags

CCSS.8.F.A.1

Front

What is a linear function?

Back

A linear function is a function that graphs to a straight line, typically in the form y = mx + b.

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Front

What is the definition of a domain in a function?

Back

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

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1