brettswain1342
13.10.2019 •
Mathematics
Is the domain {1.8,3.4,9,9.8}
{3.2,3.9,5.8,8.4,9.1}
{2.4,4.8,6.3,8.8,10.1}
{3,4.6,6.7,8.9,10.8}
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Ответ:
.. y = 7x -2.7
.. y +2.7 = 7x
.. x = (y +2.7)/7
You are given y values of {14.1, 30.9, 41.4, 58.9, 68}. The corresponding x values are {2.4, 4.8, 6.3, 8.8, 10.1}, corresponding to selection C.
_____
Since the first number in each choice is different, you only need to evaluate f(x) for those numbers to see which gives the correct result. Only the 3rd one (2.4) give f(2.4) = 14.1, the correct answer.
Ответ: