Determine whether the relation is a function. Explain why or why not. {(2, 5), (3, –5), (4, 5), (5, –5)}

A.
Yes; no value in the domain corresponds to more than one value of the range.

B.
No; the domain value 5 corresponds to two range values, 2 and 3.

C.
Yes; multiple domain values correspond to the same range value.

A.  Yes; no value in the domain corresponds to more than one value of the range.

Step-by-step explanation:

There is no domain value that corresponds to more than one range value.

 

If you graph the ordered pairs on a coordinate plane, you cannot draw a vertical line that passes through more than one point.

In your question which ask for the statement that best fit in your theorem that a parallel line to one side of a triangle divides the other two porportionately which states that segment DE is parallel to segment BC and segment EF is parallel to AB so the answer is BD=15