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lala2
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@ShotGunGirl
lala2
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DO you have any idea
ShotGunGirl
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Not not really. I stink at this stuff. Sorry :(
lala2
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oh ok
lala2
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@Rainbowpower
lala2
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Do you know?
Rainbowpower
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yep hold on im working the problem out :)
Rainbowpower
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Factoring polynomials never goes away. You have to factor numerator and denominator.
x^3+x^2-4x-4 can be factored "by grouping" as
X^3+x^2-4x-4=(x^3-4x)+(x^2-4)+(x^2-4)=(x+1)*(x^2-4)
It can be factored further because the difference of squares
x^2-4=x^2-2^2
factors as (x-2)*(x+2)
x^2+2x-3=(x+3)*(x-1)
Rainbowpower
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putting it all together:
Rainbowpower
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oh and the function is not defined (it does not exist) for x=1 and for x=-3 because the denominator is zero for those values of x .
Rainbowpower
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Hope this helps :) have a colorful day
Rainbowpower
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@lala2
lala2
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Sorry my computer wasnt working
lala2
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so would the answer be x=1 and x=-3
lala2
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@Rainbowpower ??
radar
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x=1 and x=-3 would result in a division by zero, and as you know that is a "no-no" and would result in a discontinuity.
radar
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Yes, that is what the problem is seeking.
lala2
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so that is the answer
lala2
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And what about this one
Describe the vertical asymptote and hole for the graph of x^2+x-6/ x^2-9
lala2
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@radar ??
lala2
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????
radar
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a division by zero would occur a x=3
lala2
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so is it x=3 and x=-3
radar
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I am not sure what occurs when x=-3 but x=3 and x=-3 is probably your best choice.
lala2
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oh ok thanks... you know that question i sent you
lala2
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and you asked if there was a slope
lala2
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here is the graph
radar
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|dw:1360084607949:dw|
lala2
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lala2
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what is that...
lala2
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did you get the graph
lala2
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@radar ?
radar
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I believe the 3rd choice may be the best, still not sure about the
lala2
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about what?
radar
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about the x = -3
lala2
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oh ok... and what about the question with the graph
radar
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I also don't know the answer to the link graph. Not too much help today.
radar
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Regarding the graph, you do have a y intercept at x=-3. It is a function as a vertical line will not intercept the y values twice. It is a non-linear function.
radar
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It is a direct variation
y=3x
lala2
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it want me to write an equation
lala2
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its asking for an equation
radar
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and I provided one for you. y=3x
radar
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I gotta run for now (lunch)
lala2
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oh ok thanks!