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katovenus [111]
3 years ago
7

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

Mathematics
1 answer:
Pani-rosa [81]3 years ago
6 0

Here looking at x in (x,y) pairs

\\ \sf\longmapsto 8\neq4\neq6\neq 7\neq 2

  • Every value has a unique image
  • Hence its a function

\\ \sf\longmapsto D_f=\{8,4,6,7,2\}

\\ \sf\longmapsto R_f=\{-2,-6,-8,5,4\}

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Second, solve the first equation. / 2x + 12 = 18
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