algebra

Can someone help with inverse relations and functions?
is relation t a function? Is the inverse t a function?
chart looks like:
x 0 2 4 6
y -10 -1 4 8

If someone could please explain this problem

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  1. since each value of x has a single value for y, relation t a function.

    same for the inverse.

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  2. thank you for the help

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