To translate the graph of the function \( y = |x| \) to the left by 10.5 units, you need to replace \( x \) with \( x + 10.5 \) in the absolute value function.
The correct equation for this translation is:
\[ y = |x + 10.5| \]
So the correct answer from the options you provided is:
y = |x + 10.5|