The width of a container is 5 feet less than its height. its length is 1 foot longer than its height. the volume of the container is 216 cubic feet. how tall is the container?

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.