Graphing Proportional Relationships

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where the ratio of one quantity to the other is constant.

Front

What does the horizontal axis represent in a graph?

Back

The horizontal axis represents the independent variable, commonly denoted as x.

Front

What does the vertical axis represent in a graph?

Back

The vertical axis represents the dependent variable, commonly denoted as y.

Front

What is the origin in a graph?

Back

The origin is the point (0,0) where the x-axis and y-axis intersect.

Front

What is the requirement for a graph to be considered proportional?

Back

The graph must start at the origin (0,0) and be a straight line.

Front

What does a straight line indicate in a graph of a proportional relationship?

Back

A straight line indicates a constant rate of change between the two variables.

Front

How can you identify a coordinate pair on a graph?

Back

A coordinate pair is identified by its position on the graph, represented as (x,y).

Front

What is the equation of a proportional relationship?

Back

Front

What does the slope of a line represent in a proportional relationship?

Back

The slope represents the constant rate of change or the ratio of the change in y to the change in x.

Front

If a graph does not start at the origin, is it proportional?

Back

No, if a graph does not start at the origin, it is not considered a proportional relationship.