anonymous
  • anonymous
Which of these equations represent functions? Check all that apply. A. y = x2 B. y = 3x C. x2 - y2 = 1 D. y2 = x2
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
i think a and c
mathstudent55
  • mathstudent55
a & b
anonymous
  • anonymous
thanks loli got 1 right

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mathstudent55
  • mathstudent55
c & d are not functions.
anonymous
  • anonymous
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mathstudent55
  • mathstudent55
yes
mathstudent55
  • mathstudent55
@ankolix A function is a realtion that maps each element of its domain to a single element of its range. A parabola that opens up or down is a function. A parabola that opens right or left is not a function.
mathstudent55
  • mathstudent55
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mathstudent55
  • mathstudent55
An easy way to tell if a relation is a function from a graph is the vertical line test. Think of a vertical line moving from left to right on the graph. If in any position, the vertical line intersects more than one point of the relation, then the relation is not a function.
anonymous
  • anonymous
thanks sooooooo much for the help!!!!!!!!!!
mathstudent55
  • mathstudent55
You're very welcome.

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