Algebra-1

Question Analysis
This question involves classifying a specific relationship as an equation while recognizing it fails to be a function.
The main focus is on applying the definitions to a non-functional relationship.

Key Concept Explanation
 is an equation because it uses the "=" sign to equate two expressions (x and ).
However, it is not a function: for example, if , y can be 2 or , violating the "one input → one output" rule of functions.

Step-by-step Solution
Check if it is an equation: It uses "=" to show equality, so yes.
Check if it is a function: For