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How many are functions? 1.(5,2)(9,0)(2,5)(5,7) 2.(-2,5)(-4,7)(-9,10)(-11,12) 3.(3,-5)(7,9)(2,3)(-5,9) 4.(4,7)(-2,5)(-2,6)(-5,10) 10 POINTS PLS HELP!
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How many are functions?

1.(5,2)(9,0)(2,5)(5,7)
2.(-2,5)(-4,7)(-9,10)(-11,12)
3.(3,-5)(7,9)(2,3)(-5,9)
4.(4,7)(-2,5)(-2,6)(-5,10)
10 POINTS PLS HELP!

User Inder
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5 votes
1 and 10 are functions
User Amiran
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