Use the table to answer the following questions.
Time (hours) Distance (miles)
2 90
3 135
5 225
6 270
Find the constant of proportionality.
Use the constant of proportionality to write a unit rate for the data in the table.
Write an equation to represent the relationship between time, t, and distance, d.
The constant of proportionality is 45 (distance divided by time).
The unit rate is 45 miles/hour.
The equation to represent the relationship between time, t, and distance, d, is d = 45t.