Question

please help !! i need to select one of the numbers up top, and the bottom part i need to figure out if it is (i) or (ii) thank you!!

Answer 1

Let's begin by listing out the given information:

I.

$(x,y)=(1,3),(2,5),(3,4),(4,7)$

II.

$(x,y)=(1,3),(1,5),(2,4),(3,7)$

A function assigns one element of x in a set A to exactly one element called f(x) in a set B

The first function

Every element of x has a distinct element in y.

the second function

The element x = 1, has 2 different elements in y. We see y has 2 different values from the same value of x

Therefore, the first function defines y as a function of x