anonymous
  • anonymous
WILL MEDAL AND FAN!! NEED HELP ASAP!! PLEASE!! Describe the graph x3-18x2+101x-180. Find the y and x intercepts
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
@mathstudent55 @astrophysics @KEYS
anonymous
  • anonymous
Please anyone
anonymous
  • anonymous
@owlcoffee

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anonymous
  • anonymous
Hi!!
Owlcoffee
  • Owlcoffee
\[f:f(x)=x ^{3}-18x^2+101x-180\] Before I bI+ll describe to you why I put the "f:f(x)" there. Very simple, because a graph is but a bunch of points set up in a reference system, where x increases, the value of y will be dependant on the value of "x" that we take in consideration, therefore, the "function" describes the behavior of these points. There are some notable points that most functions have in their composition, which are: (1) The y-intercept (2)The x-interception, often called "zeroes" or "roots". The "y-intercept" is the notable point of the function where the "x" value is zero, therefore, we will take the function and replace all the "x's" with "0's" and that will allow us to know where in the y-axis the point is situated: \[f:f(0)=(0)^3-18(0)^2+101(0)-180\] I'll leave the calculations to you. The "x" interception is a little more complex, but very linear concept, but these notable or notable points have the definition of nullifying the function, meaning that we want to know the values of "x" that make the whole function equal zero: \[x ^{3}-18x^2+101x-180 =0\]
anonymous
  • anonymous
Is the y intercept (0,-180)
anonymous
  • anonymous
@owlcoffee
anonymous
  • anonymous
@phi
anonymous
  • anonymous
@LynFan please help😊
LynFran
  • LynFran
ok to find the x intercept we let y=0 to find the y intercept we let x=0 and yours y intercept is correct...
anonymous
  • anonymous
OK so whatvabout the xintercept?
LynFran
  • LynFran
let y=0 and solve for x ok
anonymous
  • anonymous
Ok so would it be (-1,0)
LynFran
  • LynFran
\[x ^{3}-18x ^{2}+101x-180=0\]
anonymous
  • anonymous
So would there be multiply x intercepts
anonymous
  • anonymous
Is it 3x+36x-101x-180
anonymous
  • anonymous
I'm sorry I'm not getting this😥
LynFran
  • LynFran
https://www.symbolab.com/solver/algebra-calculator/x%5E%7B3%7D-18x%5E%7B2%7D%2B101x-180%3D0/?origin=button
anonymous
  • anonymous
Thank you
anonymous
  • anonymous
Would the intercepts be (-1,0) (2,0)
anonymous
  • anonymous
@LynFan yes?
LynFran
  • LynFran
(5,0), (4,0), (9,0) and (0,-180) the solution to y intercept also... https://www.symbolab.com/solver/algebra-calculator/0%5E%7B3%7D-18%5Cleft(0%5Cright)%5E%7B2%7D%2B101%5Cleft(0%5Cright)-180%3Dy/?origin=button
anonymous
  • anonymous
Can u showvme how u found that on here? It won't open on my browser
LynFran
  • LynFran
what r u talking about...how i find what?
anonymous
  • anonymous
The x intercept
LynFran
  • LynFran
i type the complete equation here...https://www.symbolab.com/solver/algebra-calculator/x%5E%7B3%7D-18x%5E%7B2%7D%2B101x-180%3D0/?origin=button and the calculator solve for x intercept
anonymous
  • anonymous
It won't work BC it says I have to pay for it
anonymous
  • anonymous
Can u just write it here without the link
LynFran
  • LynFran
ok the first step to do is to factor the equation
LynFran
  • LynFran
\[x ^{3}-18x ^{2}+101x-180=0\]when factored we get\[(x-4)(x-5)(x-9)=0\] we then let each bracket=0 since they are product of each other..\[(x-4)=0\]\[(x-5)=0\]\[(x-9)=0\]..so \[x=4\]\[x=5\]\[x=9\]
anonymous
  • anonymous
Then howvwould u graph thaylt
anonymous
  • anonymous
Can u graph that?
anonymous
  • anonymous
Wouldn't it u use Descartes sign rule?
anonymous
  • anonymous
Wouldn't it u use Descartes sign rule?
LynFran
  • LynFran
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anonymous
  • anonymous
Ahhhh that you!!!!
anonymous
  • anonymous
Thank you!!
LynFran
  • LynFran
welcome

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