Can someone show me how to do this?
Find the inverse of {(3, 2), (4,2)} and tell whether its a function.

Question

Can someone show me how to do this?
Find the inverse of {(3, 2), (4,2)} and tell whether its a function.

mertsj · Answer

Just reverse the x and y values in the ordered pairs.  Then check if any of the ordered pairs have the same first number.  If they do, it's not a function.

anonymous · Answer

so all you need to do is reverse x and y? what will happen if you have 3 ordered pairs? would you do the same?

mertsj · Answer

Yep.  You would do the same.  Is the inverse a function or not?

anonymous · Answer

yea..i dont know how to determine whether its a function or not..do you mind explaining?

mertsj · Answer

Did you read what I wrote in my first post?

anonymous · Answer

OHHHH...OKAY i understand..so its not a fucntion

mertsj · Answer

Right.  The inverse is NOT a function.

mertsj · Answer

At least in this case.  Sometimes it will be.

anonymous · Answer

because 2 is repeated..

anonymous · Answer

does this rule apply to all functions?

mertsj · Answer

Yes.  The 2 is paired with more than 1 y value

mertsj · Answer

Absolutely.  learn these lessons about functions well because you will be involved with functions for as long as you study math.

anonymous · Answer

okay..thanks you really cleared up the functions for me :D

mertsj · Answer

yw.  isn't learning fun!!!

anonymous · Answer

it sure is!!