The following graph represents y = √ x + 1. What is the value of x when y = 0?

if you're trying to figure out how much each ounce cost it would be 0.20

cents each ounce

sample answer: you can determine whether each element of the domain is paired with exactly one element of the range. for example, if given a graph, you could use the vertical line test; if a vertical line intersects the graph more than once, then the relation that the graph represents is not a function.