Is the relation a function? why or why not? {(–5, 7), (–2, –1), (0, 3), (4, 7)}  a. no; two domain values exist for range value 7.b. yes; only one range value exists for each domain value. c. no; the relation passes the vertical line test. d. yes; two domain values exist for range value 7.

B. Yes; only one range value exists for each domain value.

Step-by-step explanation:

A relation is considered a function only if for each domain value (the values that x-variable takes) only one range value exists (the values that y-variable takes). In this case, the values taken by the x-variable are: -5, -2, 0 and 4; all in different points.

It doesn't matter that two domain values (or more) have the same range value.

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