Question 304732
Example: Translate to an algebraic expression 29 multiplied t
.
It is simply:
29t
..

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Regarding:
Is (2,-3), (4,6), (3-1), (6,6), (2,3), a function

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No it is not a function.
We use the "vertical line" test to see if it is a function.  This basically says for a value x there must be one unique value for y.
In this case, you have a conflict between
(2,-3) and (2,3)