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avahrider1
05.11.2020 •
Mathematics
This is easy i just wanted to postit what is 2+2+2+2+2+4+7+9
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Ответ:
Part A: Yes, the first data represents a function. By the book definition, a function is a relation in which no value of x will have two different values of y. This means that we can have two similar values of y with two different values of x but not the other way around.
None of the numbers for the table of x repeat, therefore we can safely say that the relation is a function.
Part B: For this part, all we have to do is to plug in x = 4 in the 2nd relation,
f(x) = 2(4) – 8 = 0
In the table, when x = 4, y = 9. Therefore the function described in the table has greater value.
Part C: Again all we have to do is to plug in x = 34 in the 2nd relation,
f(x) = 2(34) – 8
f(x) = 60