anonymous
  • anonymous
Can someone show me how to do this? Find the inverse of {(3, 2), (4,2)} and tell whether its a function.
Mathematics
chestercat
  • chestercat
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Mertsj
  • Mertsj
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
  • anonymous
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
  • Mertsj
Yep. You would do the same. Is the inverse a function or not?

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anonymous
  • anonymous
yea..i dont know how to determine whether its a function or not..do you mind explaining?
Mertsj
  • Mertsj
Did you read what I wrote in my first post?
anonymous
  • anonymous
OHHHH...OKAY i understand..so its not a fucntion
Mertsj
  • Mertsj
Right. The inverse is NOT a function.
Mertsj
  • Mertsj
At least in this case. Sometimes it will be.
anonymous
  • anonymous
because 2 is repeated..
anonymous
  • anonymous
does this rule apply to all functions?
Mertsj
  • Mertsj
Yes. The 2 is paired with more than 1 y value
Mertsj
  • Mertsj
Absolutely. learn these lessons about functions well because you will be involved with functions for as long as you study math.
anonymous
  • anonymous
okay..thanks you really cleared up the functions for me :D
Mertsj
  • Mertsj
yw. isn't learning fun!!!
anonymous
  • anonymous
it sure is!!

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