Finding the value of an algebraic expression when a given number is used to replace a variable is the evaluating an expression for a function.
What is an expression?
An expression, also known as a mathematical expression, is a finite combination of symbols that are well-formed in accordance with context-dependent rules.
Finding the value of f(x) =... or y =... that corresponds to a specific value of x is what it means to evaluate a function.
Simply swap out all instances of x with the value of x to accomplish this. For instance, x has been given the value 4 if we are asked to evaluate f(4).
We use the given number to replace the expression's variable before using the order of operations to simplify the expression.
Hence, finding the value of an algebraic expression when a given number is used to replace a variable is the evaluating an expression for a function.
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