We define x as a year between 2008 and 2013 and y as the total number of smartphones sold that year, in millions. The table shows values of x and corresponding y values.
Year
2008 2009 2010 2011 2012 2013
Number of
smartphones
in millions
ly)
3.7
173
424
90
125
153.2
Is y a function of x? Explain why or why not.

your answer is the frist one

hop i

what is

step-by-step explanation:

3

step-by-step explanation:

step-by-step explanation:

to determine whether a given function is even, we simply substitute x with -x in the expression. if the result after simplification is identical to the original equation, then the function is said to be even other wise odd.

f(-x) = (-x)^2 - (-x) + 8

      = x^2 + x +8

the resulting function is not identical to the original one;

f(-x) ≠ f(x)

therefore, f(x) is not an even function