Final answer:
To solve the equation 4 -> 2 - 2 for 2, subtract 2 from 2 to get 0 as the solution. On the number line, represent the solution set by placing a closed circle at the point corresponding to 0.
Step-by-step explanation:
To solve the equation 4 -> 2 - 2 for 2, we need to follow the order of operations, which is parentheses, exponents, multiplication and division (from left to right), and addition and subtraction (from left to right). In this case, there are no parentheses or exponents, so we start with subtraction: 2 - 2 = 0. Therefore, the solution to the equation is 0.
To plot the solution set on the number line, we can use a closed circle to indicate that 0 is included in the solution set. Since the number line contains negative and positive numbers, we place the closed circle at the point that corresponds to 0.
Learn more about Solving equations and plotting on a number line