If a relation is a function, how many y-values can an x-value have?
Yes, see solution.
Practice makes perfect
For a relation to be a function, two or more points cannot have the same x-values if they have different y-values. Let's label each of the points in the graph representing the relationship between the number of hexagons, x, and the perimeter, y.
Looking at the graph, we can see that each x-value corresponds to exactly one y-value. This means that the relation between the number of hexagons and the perimeter is a function.
