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WildfireintheHeart
10.09.2021 •
Mathematics
In a toolbox, a third of them are new. For the rest, half are less than 1 year old and the others more than 2 years old. If we know that there are 120 tools in the box, how many of each type are there?
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Ответ:
Given:
The relation is {(-5, -3), (-1, 3), (4,3), (8, 8)}.
To find:
Whether the given relation is a function or not.
Solution:
A relation is called a function, if there exist a unique output for each input.
We have, a relation given as
{(-5, -3), (-1, 3), (4,3), (8, 8)}
Here, all x-values are different. So, each x-value has a unique y-value.
Thus, there exist a unique output for each input.
Therefore, the given relation is a function.