list the intercepts and test for symmetry

y= 3x/x^2+81

Question

list the intercepts and test for symmetry

y= 3x/x^2+81

anonymous · Answer

Parenthesis please...  You wrote:
$$y= \frac{3x}{x^2}+81$$

But I think you probably meant:
$$y= \frac{3x}{x^2+81}$$

This is why parenthesis matter.  The two are totally different graphs!

anonymous · Answer

sorry yes its the second one

anonymous · Answer

intercepts are when it crosses the x-axis (y=0) and when it crosses the y-axis (x=0).

Find what y is when x is zero first here.

f(0) = ?  (that means plug in 0 for x if that wasn't clear)

anonymous · Answer

FYI:  The correct way to write the second one would have been: y= 3x/(x^2+81)  See why?  Multiplication before addition.

$$f(0) = \frac{3(0)}{(0)^2+81} = \ ?$$

anonymous · Answer

y = f(x)   I'm just making it into a function here so you can see it easier.

anonymous · Answer

ok

anonymous · Answer

im still a little confused

anonymous · Answer

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