To find the value of \( h \) in the function \( f(x) = x + h \) that describes the translation from the point (5, 6) to (3, 6), we need to focus on the x-coordinates since the y-coordinate remains the same.
The initial point is (5, 6) and the final point is (3, 6). The x-coordinates are changing from \( 5 \) to \( 3 \).
We can express this as follows:
\[ f(5) = 3 \]
Substituting into the function:
\[ 5 + h = 3 \]
To solve for \( h \), we subtract 5 from both sides:
\[ h = 3 - 5 \]
\[ h = -2 \]
Thus, the value of \( h \) is \( -2 \).