Question 1197836
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I'll do problem 3 to get you started.


Each point in the given set is of the form (x,y)
We swap the positions of those coordinates to form the inverse. 
Do this for every point.
Something like (-9,-8) flips to (-8,-9)


The inverse of
{(-9, -8), (-16, 5), (17, 6), (19, 4), (-8, 9), (-10, -10)}
is 
{(-8,-9), (5,-16), (6,17), (4,19), (9,-8), (-10, -10)}
The order of the points doesn't matter. 
A set with points A,B,C inside has {A,B,C} the same as {B,C,A} for instance.


Then notice how there aren't any repeated x coordinates in the inverse. We have each x input lead to exactly one y output only. Therefore, the inverse is a function.


Problem 4 will follow the same outline of steps. Though I won't give away if the inverse is a function or not.
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