## Graphs of Proportional Relationships

## Work Time

# Graphs of Proportional Relationships

The coordinate grid shows the graphs of five proportional relationships.

- Approximate, as closely as possible, the constant of proportionality for each line.
- The graph of a proportional relationship with a constant of 1 would lie between two of these lines. Explain why.

## Hint:

- If you can find one point on the line, how can you determine the constant of proportionality?
- What would a line with a constant of proportionality of 1 look like? What are some examples of ordered pairs that have a ratio of 1?