If the debate team bought \( t \) matching T-shirts and each member of the team will get 9 T-shirts, you can express the number of members on the team as follows:
Let \( n \) be the number of members on the debate team.
Since each member receives 9 T-shirts, the total number of T-shirts distributed can be expressed as \( 9n \).
Given that the total number of T-shirts is \( t \), we can set up the equation:
\[ 9n = t \]
To find the expression that shows how many people are on the debate team, we can solve for \( n \):
\[ n = \frac{t}{9} \]
Thus, the expression that represents the number of people on the debate team is:
\[ \frac{t}{9} \]