LDME Module 4 Review "Functions"

Front

What is the domain of a relation?

Back

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

Front

What is the range of a relation?

Back

The range of a relation is the set of all possible output values (y-values) that result from the input values in the domain.

Front

Given the relation {(-2, 5), (0, -1), (1, -5), (2, 4), (4, -1)}, what is the domain?

Back

Domain: {-2, 0, 1, 2, 4}.

Front

Given the relation {(-2, 5), (0, -1), (1, -5), (2, 4), (4, -1)}, what is the range?

Back

Range: {-5, -1, 4, 5}.

Front

What is a function?

Back

A function is a relation in which each input (x-value) is associated with exactly one output (y-value).

Front

How can you determine if a relation is a function?

Back

A relation is a function if no x-values repeat; each input must map to one and only one output.

Front

What does the equation y = x + 3 represent?

Back

It represents a linear function where the slope is 1 and the y-intercept is 3.

Front

What is the slope of the line represented by the equation y = -2x - 4?

Back

The slope is -2.

Front

What is the y-intercept of the line represented by the equation y = -2x - 4?

Back

The y-intercept is -4.

Front

How do you express a relation as a table?

Back

List the pairs of x and y values in a tabular format.