Question

In your own words, explain how to tell if a relation is a function and give an example.

Answer 1

What have y ou thought of doing, so far?
Have you looked u p "function" for cues as to what constitutes a function?

One way to determine whether a relation is a function is to graph the relation.

Then, draw a vertical line thru the graph. If the line intersects the graph more than once, the relation is NOT a function.

Answer 2

i dont know

Answer 3

I'd be happy to help you, AFTER you've done some research on your own to help yourself. I gave you a clear, positive suggestion: Have you looked u p "function" for cues as to what constitutes a function?

Answer 4

Each input only has one output.

Y=x+1

Answer 5

thats the answer i've came up with

Answer 6

Exactly. If, for one x value, you have exactly 1 y-value, you have a function.
If, for one x value, you have two or more y values, you do NOT have a function.