Lesson 3-1 and 3-2 Review

Front

Is this set of ordered pairs a function or not a function?

Back

Function

Front

What is the slope of the line?

Back

Undefined

Front

Find the slope through these two points: (x1, y1) and (x2, y2).

Back

Slope = (y2 - y1) / (x2 - x1). Example: Slope through (11, 5) and (5, 0) is (0 - 5) / (11 - 5) = -5/6.

Front

What is the domain of the relation shown in the table?

Back

The domain is the set of all first elements (x-values) in the ordered pairs.

Front

Find the slope through these two points: (3, 4) and (3, 8).

Back

Undefined (vertical line).

Front

What is a function?

Back

A relation where each input (x-value) has exactly one output (y-value).

Front

What is the range of a function?

Back

The set of all possible output values (y-values) of a function.

Front

What does it mean for a slope to be zero?

Back

A slope of zero indicates a horizontal line, meaning there is no change in y as x changes.

Front

What does it mean for a slope to be undefined?

Back

An undefined slope indicates a vertical line, meaning there is no change in x as y changes.

Front

How do you determine if a relation is a function using a graph?

Back

Use the vertical line test: if a vertical line intersects the graph at more than one point, it is not a function.