Answer:
<h3>
Explain wether the graph represents a function.</h3>
<em>The graph represents a function because each x-value corresponds to exactly one y-value.</em>
For example, in the given graph you see that for x=2 there's only one corresponding value, which is, y=40, that's what defines a function. If you have a graph where a certain value of x has to y values, that means is not a function, because for one x-value would be more than one y-values, so that would be only a relation, not a function.
It's important to specify the right order, that is, if we say each y-value corresponds to exactly one x-value, that's not exactly de definition of a function, because it actually happens, because in a quadratic expression, 2 and -2 would be the same result 4, so one y-vale has two x-value, but it's still a function.
So, the right order is <em>The graph </em><em>represents</em><em> a function because each </em><em>x-value </em><em>corresponds to </em><em>exactly</em><em> one </em><em>y-value.</em>