To find the missing value for \( y \) when \( x = 2 \) using the given information that Sami is driving 75 miles each hour, we can use the relationship:
\[ y = x \times \text{(rate in miles per hour)} \]
Since \( x = 2 \) and the rate is 75 miles per hour:
\[ y = 2 \times 75 = 150 \]
Thus, the missing value in the table for \( x = 2 \) is 150.