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14-08-2017
Mathematics

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for all the following, which ones represent y as a function of x, and how do you know?

for all the following which ones represent y as a function of x and how do you know class=

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kphung76127 kphung76127

14-08-2017

Only 25 and 28 are functions.

A function must have only one y value per x value. For 26, the y value of 0 and multiple others have two different y values. For 27, all x values less than 0 have multiple y values.

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