Question

Giving medal



Determine whether the relation is a function. Explain.

{(3, 9), (4, 8), (–7, 4), (0, 4), (2, 4), (3, 5), (–3, 8)}
a.
Yes, each x-value is paired with exactly one y-value.
b.
No, there is a y-value paired with more than one x-value.
c.
No, there are no negative y-values.
d.
No, there is an x-value paired with more than one y-value.

Answer 1

Does ANY x-value result in more than one y-value? I'm suspicious about x = 3.

Answer 2

x value how would that be 3

Answer 3

(3,9) means y = 9 when x = 3

Answer 4

but you may not know that any one of those numbers can be x value or y value am i right

Answer 5

?? Given an explicit point, you know all there is to know.

{(3, 9), (4, 8), (–7, 4), (0, 4), (2, 4), (3, 5), (–3, 8)}

The Domain of this relation is 3,4,-7,0,2,-3 That's it.

When x takes on the value 4, we get only y = 8
When x takes on the value -7, we get only y = 4
When x takes on the value 0, we get only y = 4

You do the rest and see what you get.

Answer 6

oh ok i see where your going no this

Answer 7

What was your final result? Is it a function or not?

Answer 8

It is not a function for any x there cannot be two or more values of y
because 3 paired with 9 and 5