The algebraic expression for the product of 9 and x is 9x. This can be expressed in steps as follows:
Step 1: Identify the values that are being multiplied together. In this case it is 9 and x.
Step 2: Write the two values side by side and place a multiplication sign between them.
Step 3: The algebraic expression for the product of 9 and x is then written as 9x.