The product of two variables

The sum of two variables

The difference between two variables

The relationship between two sets of data

As x increases, y decreases

As x decreases, y increases

No change in y with change in x

As x increases, y also increases

Number of hours studied versus grade received

Size of a home versus its lot size

Number of passengers on a plane versus number of suitcases

Number of days into fall versus number of leaves on trees

Points creating an upward trend from left to right

Points aligning perfectly on a straight line

Points creating a downward trend from left to right

Points scattered randomly without direction

A line that best represents the trend of the data points

A line that connects the highest and lowest points

A line that divides the graph into two equal halves

A line that perfectly passes through all points