SOLUTION: Write the polynomial function P (lowest-possible degree) that could have the graph shown on the right Finding the leading coefficient http://i.imgur.com/ERfGDlj.png I unders

Algebra ->  Graphs -> SOLUTION: Write the polynomial function P (lowest-possible degree) that could have the graph shown on the right Finding the leading coefficient http://i.imgur.com/ERfGDlj.png I unders      Log On


   



Question 916560: Write the polynomial function P (lowest-possible degree) that could have the graph shown on the right
Finding the leading coefficient
http://i.imgur.com/ERfGDlj.png
I understand that it must be 4 degrees because it goes through at 3 bounces at -1 and through at at 2.
and it would be set up: (x+3)(x+1)^2(x-2)
I know it must be negative because it is downwards but how do I find the leading coefficient?
Thank you

Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
if it goes through at 3 bounces at -1 and through at 2, we will have:
f%28x%29=%28x-3%29%28x%2B1%29%5E2%28x-2%29...when you multiply all this, you will get
f%28x%29=x%5E4-3x%5E3-3x%5E2%2B7x%2B6

the coefficient of the term with the highest degree (which is x%5E4 or highlight%281%29%2Ax%5E4) is called the leading coefficient: in your case the leading coefficient is highlight%281%29

+graph%28+600%2C+600%2C+-15%2C+15%2C+-15%2C+15%2C+x%5E4-3x%5E3-3x%5E2%2B7x%2B6%29+
but, on your image graph goes through points (-1,+0+),(1,+0+), (2,+0+), and y-intercept is (+0+,+-2+)
so, is this graph http://i.imgur.com/ERfGDlj.png you need to find equation for?