URGENT giving 100 pts no links no fakes give evidence srong answers or gueses will be reported

or

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.

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step-by-step explanation:

this is a parabola.