Pre-Algebra Review

Front

What is a function?

Back

A function is a relation where each input has exactly one output.

Front

Is the mapping {(1, 2), (2, 3), (3, 4)} a function?

Back

Yes, it is a function because each input has one output.

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Back

Front

What is the vertical line test?

Back

A method to determine if a graph represents a function; if a vertical line crosses the graph more than once, it is not a function.

Front

What does a positive correlation in a scatter plot indicate?

Back

As one variable increases, the other variable also increases.

Front

What does a negative correlation in a scatter plot indicate?

Back

As one variable increases, the other variable decreases.

Front

What is an inequality?

Back

An inequality is a mathematical statement that compares two expressions using symbols like <, >, ≤, or ≥.

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Back

Front

What is the definition of a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables.

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.