Fractions and Ratios Question
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The ratio table shows the relationship between the height of a stack of coins, in millimeters, and the number of coins in the stack.
What is the constant of proportionality for height per coin?
| Coins | Height |
|---|---|
| 5 | 10 |
| 10 | 20 |
| 15 | 30 |
| 20 | 40 |
| 25 | 50 |
What is the constant of proportionality for height per coin?