Unit 2 REVIEW

Front

What is a relation in mathematics?

Back

A relation is a set of ordered pairs, typically representing a relationship between two sets of values.

Front

When is a relation considered a function?

Back

A relation is a function when each input (or domain value) is associated with exactly one output (or range value).

Front

What does it mean for a graph to be proportional?

Back

A graph is proportional if it represents a constant ratio between two variables, typically shown as a straight line passing through the origin.

Front

What is the constant of proportionality?

Back

The constant of proportionality is the constant value (k) that relates two proportional quantities, often represented in the equation y = kx.

Front

What is a mapping in mathematics?

Back

A mapping is a function that describes how each element of one set corresponds to an element of another set.

Front

How can you identify if a graph represents a function?

Back

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

Front

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

Back

A function has one output for each input, while a non-function may have multiple outputs for a single input.

Front

What is the significance of the slope in a proportional graph?

Back

The slope of a proportional graph represents the constant of proportionality, indicating the rate of change between the two variables.

Front

How do you determine the constant of proportionality from a table of values?

Back

To find the constant of proportionality, divide the output value by the corresponding input value for any pair of values in the table.

Front

What does it mean for a graph to be linear?

Back

A linear graph represents a relationship that can be described by a linear equation, resulting in a straight line.