Pre-Algebra Fall Benchmark Vocabulary

Front

Function

Back

A relationship where every X value is paired with only one Y value: on a graph, there is only one dot on each vertical line.

Front

Variable

Back

The letter in an equation.

Front

Slope-Intercept Form

Back

The equation for a nonproportional relationship: shown as y = mx + b.

Front

Initial Value

Back

A synonym for y-intercept: the starting point in a word problem.

Front

Rate of Change

Back

A synonym for slope: the rate at which an object moves or changes: the change in Y over the change in X: solve using the slope formula.

Front

Slope

Back

The rate at which a line moves on the graph: the steepness of a line: found by counting up and over on a graph.

Front

Y-Intercept

Back

The point where a drawn line crosses the Y-axis on a graph.

Front

Direct Variation

Back

The equation for a proportional relationship: shown as y = kx.

Front

Proportional

Back

A relationship that has a constant of variation: goes through the origin on a graph.

Front

Nonproportional

Back

A relationship that does not have a constant: does not go through the origin, but does have a y-intercept.