Which of the tollowing best describes the equation below?
A. function only
( B. both a relation and a function
C. nefther a relation nor a function
D. relation only

A function is a specific type of relation where each input has a unique output. So, to determine the best description for the equation in question, it’s important to assess if there are any repeated outputs for a single input. If there’s a unique output for every input, it’s a function; otherwise, it might simply be a relation.

When analyzing equations, it’s common to overlook the principle of the vertical line test. If you can draw a vertical line through the graph of the equation and it touches the graph at more than one point, then it’s definitely not a function! Make sure to visualize or plot the equation if you’re unsure!