Tom defines - as a year between 2008 and 2013 and - as the total number of smartphones sold that year- in millions- The table shows values of - and corresponding - values- Yearx200820092010201120122013Number of smartphones in millions y3-717-342-490125153-2Is - a function of -

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Byju's Answer

Standard VIII

Mathematics

Representing Functions using Table and Ordered Pairs

Tom defines �...

Question

Tom defines 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(x) 2008 2009 2010 2011 2012 2013

Number of smartphones in millions (y) 3.7 17.3 42.4 90 125 153.2

Is 𝑦 a function of 𝑥?

Yes

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It is impossible to say

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None of the above

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Solution

The correct option is A Yes
Yes it a function because for each input there is exactly one output. Specifically, only one number will be assigned to represent the number of smartphones sold in the given year.

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Year(x)	2008	2009	2010	2011	2012	2013
Number of smartphones in millions (y)	3.7	17.3	42.4	90	125	153.2

The correct option is A YesYes it a function because for each input there is exactly one output. Specifically, only one number will be assigned to represent the number of smartphones sold in the given year.

The correct option is A Yes
Yes it a function because for each input there is exactly one output. Specifically, only one number will be assigned to represent the number of smartphones sold in the given year.