Understanding Linear Functions and Variables

Front

An input/output "machine" that produces one unique output for each input.

Back

Function

Front

All the "horizontal" components of a set of points.

Back

Domain

Front

All the "vertical" components of a group of points.

Back

Range

Front

The variable, usually "x," that is not modified by the function rule to create outputs.

Back

Independent Variable

Front

Standard form of a linear function.

Back

Ax + By = C

Front

When you "scan" a line on a graph from left to right and notice that the height is increasing.

Back

Positive Slope

Front

When you "scan" a line on a graph from left to right and your height is decreasing.

Back

Negative Slope

Front

When a line continues off the sides of the graph in both directions.

Back

Domain of negative infinity to positive infinity

Front

When a line continues off the top and bottom of the graph and continues to move further away from the x-axis.

Back

"Range" is negative infinity to positive infinity.

Front

The point where a line crosses the y-axis.

Back

Y-Intercept