Proportional Graphs

Front

What is the ordered pair (0,0) also known as?

Back

origin

Front

Does the table represent a proportional relationship?

Back

No.

Front

Is the graph shown proportional or non-proportional? Explain how you know.

Back

non-proportional because it is not a straight line

Front

What makes a graph proportional?

Back

Straight line and the line goes through the origin

Front

What is the constant ratio in the table? (Cost per hour)

Back

$9

Front

What is a proportional relationship?

Back

A relationship where two quantities maintain a constant ratio.

Front

What does it mean for a graph to go through the origin?

Back

It means that the point (0,0) is on the graph.

Front

What is the slope of a proportional graph?

Back

The slope is the constant ratio of the change in y to the change in x.

Front

How can you tell if a graph is non-proportional?

Back

If it does not pass through the origin or is not a straight line.

Front

What is the difference between proportional and non-proportional graphs?

Back

Proportional graphs are straight lines that pass through the origin; non-proportional graphs do not.