Answer:
We have seen that some equations in x and y do not describe y as a function of x. The algebraic way see if an equation determines y as a function of x is to solve for y. If there is not a unique solution, then y is not a function of x.
Suppose that we are given the graph of the equation. There is an easy way to see if this equation describes y as a function of x.
Step-by-step explanation:
