## Graphs of Proportional Relationships

## Formative Assessment

# Summary of the Math: Graphs of Proportional Relationships

**Read and Discuss**

- The graph of a proportional relationship between two quantities is a straight line that starts at the origin, (0, 0).
These graphs show the proportional relationship between tricycles and wheels.

- In the graph of
*w*= 3*t*, the*x*-axis represents the number of tricycles (*t*). The*y*-axis represents the number of wheels (*w*). - In the graph of $t=\frac{1}{3}w$, the
*x*-axis represents the number of wheels (*w*). The*y*-axis represents the number of tricycles (*t*). - In the first graph, there is a point at (1, 3), at (2, 6), at (4, 12), and so on.
- In the second graph, there is a point at (3, 1), at (6, 2), at (12, 4), and so on.

- In the graph of

## Hint:

Can you:

- Explain how to use a table of values to make a graph?
- Explain what the graph of a proportional relationship looks like?