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
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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
chestercat
  • chestercat
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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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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