anonymous
  • anonymous
Determine whether y is a function of x. Explain x^2=3y+y
Algebra
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
Anyone help?
tkhunny
  • tkhunny
How do you propose to proceed? It is normally good to start with a definition. What is the definition of a function? Loosely -- Given any x-value in the Domain, do you EVER get more than one y-value?
anonymous
  • anonymous
I know how to make functions and identify them but doesn't it have to only have one answer, correct?

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anonymous
  • anonymous
I don't know with 4y, would I divide by 4 at the end?
tkhunny
  • tkhunny
That's the idea. Can you demonstrate it? Generally, just solve for y and see if it ever happens.
tkhunny
  • tkhunny
y = ¼x^2 Any way to get more than one y-value from a single x-value?
anonymous
  • anonymous
What I don't understand your question?
anonymous
  • anonymous
You can only have the domain once but the range can be repeated
tkhunny
  • tkhunny
Substitute a value for x. See what happens. Can you think of ANY x-value that would EVER result in 2 (or more) y-values? Example: x^2 + y^2 = 9 If you pick x = 0, you will get two (2) y-values, +3 and -3
anonymous
  • anonymous
I used 1 and got y=1/4
anonymous
  • anonymous
I thought it was yes it is a function
tkhunny
  • tkhunny
This one is a function. It passes the "Vertical Line Test". You don't actually have to draw vertical lines to believe this. Good work.

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