Question

What does it mean if an x (input) or y (output) value doesn't make sense? What does it look like on a graph? What happens in the equation?

Answer 1

It is not a function.

Explanation:

If the x input or the y output in the given equation have no meaning or does not have any sense, then it will not form a function. We need to see if there are two of the x - intercept which are same. Then the graph will be a straight vertical line. Also the slope of the function cannot be determined.