Question

Can someone please help me :)

Answer 1

The range of a set of points or a function is the set of y-coordinates. The set of y-coordinates in the set of points provided is {4, 5, 6, 7}. Since there is no instance in this set of points at which the same x-coordinate creates a different y-coordinate. Therefore, it is a function. This means that your answer is B. {4, 5, 6, 7}; Yes.

Hope this helps!

Answer 2

Range will be all possible values getting mapped, which is {4,5,6,7}

Since all values in domain map to one value in the range, it's a function, but not one-to-one.