Definition:

Proportional Graph: A proportional graph looks like a straight line going through the origin (0,0) and can be represented by the equation y = mx. Where 'm' is the slope and 'x' and 'y' are (x,y) coordinates on the graph.

Which graph represents a proportional relationship?

Graph the equation y = 2x

x

y

Decide which graph is proportional:

The graph shows a proportional relationship between the
cups of flour a baker uses and the number of cookies
made.

●What does the point (0,0) represent?

●What does the point (1,18) represent?

Use the graph to create an equation:

​Conclusion: Write two complete sentences about what you know.