anonymous
  • anonymous
Please help! Fan and Medal! Consider the graph of f(x) below. https://wca.sooschools.com/media/g_alg02_ccss_2014/9/img_g_alg02u09c03l20d_03.gif Write the equation of f(x), and classify the function as linear, quadratic, cubic, exponential, or logarithmic.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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sloppycanada
  • sloppycanada
First step - finding out what type of graph it is. Can we eliminate any of them?
anonymous
  • anonymous
Its deffinitely not linear or exponential @sloppycanada
anonymous
  • anonymous
I think its cubic

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sloppycanada
  • sloppycanada
Can you give me a reason as to why it would be logarithmic?
anonymous
  • anonymous
I really dont know @sloppycanada
anonymous
  • anonymous
ik this ill help
Loser66
  • Loser66
with that shape, it is ALWAYS a cubic
Loser66
  • Loser66
with the positive coefficient of x^3
Loser66
  • Loser66
Hence, the standard formula is \(f(x) =ax^3+bx^2+cx +d\)
Loser66
  • Loser66
All you need is picking 4 special points to plug into the standard form. Hint: pick x -intercept and y intercept points
anonymous
  • anonymous
gtfo loser you can help nobody
Loser66
  • Loser66
I do one for you as example:
anonymous
  • anonymous
do you have a calculator?
anonymous
  • anonymous
Madison.bush ?
anonymous
  • anonymous
its not linear
Loser66
  • Loser66
the first x-intercept is (-1,0) , that is x =-1, y =0 hence plug in, you have \(0= a(-1)^3 +b*(-1)^2+c(-1) +d\)
anonymous
  • anonymous
Yes i do have a calculator @adriangomez
anonymous
  • anonymous
so it is cubic
anonymous
  • anonymous
we just need to find a equation im i correct
Loser66
  • Loser66
Do the same with other points to get 4 equations and solve for a, b, c , d Btw, calculator is helpless here. No way to find the equation of it by calculator.
anonymous
  • anonymous
Okay thank you @Loser66
anonymous
  • anonymous
just put the numbers in and trace it @madison.bush
anonymous
  • anonymous
on calculator

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