To determine the average points per game, we can use the total points scored and the total number of games played.
The points scored at each plotted point is as follows:
- At \(0\) games: \(0\) points
- At \(3\) games: \(90\) points
- At \(5\) games: \(150\) points
- At \(7\) games: \(210\) points
First, we find the total points scored after \(7\) games:
\[ 0 + 90 + 150 + 210 = 450 \text{ points} \]
Next, the total number of games played is \(7\).
Now, we can calculate the average points per game:
\[ \text{Average points per game} = \frac{\text{Total points scored}}{\text{Total games played}} = \frac{450}{7} \approx 64.29 \]
Therefore, the average points per game is approximately \(64.29\).
So, an average of 64.29 points were scored per game.