To set up the distance formula correctly between the two points \( L(4,2) \) and \( M(7,6) \), we will use the distance formula defined as:
\[ d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} \]
Where \( (x_1, y_1) = (4, 2) \) and \( (x_2, y_2) = (7, 6) \).
Substituting the coordinates into the formula, we have:
\[ d = \sqrt{(7 - 4)^2 + (6 - 2)^2} \]
This is equivalent to:
\[ d = \sqrt{(4 - 7)^2 + (2 - 6)^2} \]
Thus, the correct setup for the distance formula from the options provided is:
\[ d = (4 - 7)^2 + (2 - 6)^2 \quad \text{ (the first option)} \]
Therefore, the correct response is:
d = (4 - 7)² + (2 - 6)²