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25-09-2021
Mathematics

contestada

Is this a function?
{(8,-2),(4,-6),(6,-8),(7,5),(2,4)}
Then state the domain and range.

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Аноним Аноним

25-09-2021

Here looking at x in (x,y) pairs

[tex]\\ \sf\longmapsto 8\neq4\neq6\neq 7\neq 2[/tex]

Every value has a unique image
Hence its a function

[tex]\\ \sf\longmapsto D_f=\{8,4,6,7,2\}[/tex]

[tex]\\ \sf\longmapsto R_f=\{-2,-6,-8,5,4\}[/tex]

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