During class today, Jeffrey's teacher gives everyone time to write their short stories. Jeffrey is proud of his story and wants to email it to his grandparents. So, after school he goes to the computer lab to type it.

To determine if \( x \) (time in minutes) and \( y \) (words typed) have a proportional relationship, we need to check if the ratio \( \frac{y}{x} \) is constant for all pairs of \( x \) and \( y \).

Let's calculate the ratios for each pair:

1. For \( x = 3 \) and \( y = 198 \): \[ \frac{y}{x} = \frac{198}{3} = 66 \]

2. For \( x = 4 \) and \( y = 264 \): \[ \frac{y}{x} = \frac{264}{4} = 66 \]

3. For \( x = 8 \) and \( y = 528 \): \[ \frac{y}{x} = \frac{528}{8} = 66 \]

4. For \( x = 9 \) and \( y = 594 \): \[ \frac{y}{x} = \frac{594}{9} = 66 \]

Since the ratio \( \frac{y}{x} \) is constant at 66 for all pairs, we can conclude that \( x \) and \( y \) do have a proportional relationship.

Answer: Yes

The constant of proportionality is:

Answer: 66