« previous next »

Author Question: QUADRATICS: Find vertex from factored form without changing the form? (Read 4153 times)

camila

  • Hero Member
  • *****
  • Posts: 705
on: Jun 17, 2013
how do I find the vertex of this without changing the form?

f(x)= -0.7(1.1-x)(3.2+x)


Jones

  • Full Member
  • ***
  • Posts: 145
Reply #1 on: Jun 17, 2013
1) find the roots:
x= 1.1
x=-3.2

The axis of symmetry is x= (1.1 - 3.2) /2= -1.05
So the x coordinate of the vertex is -1.05

Sub x= -2.1 into f(x), and you'll get the y coordinate of the vertex.


So the vertex is (-1.05, f(-1.05) )

I think you can continue from there.... :)


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

Hawke

  • Hero Member
  • *****
  • Posts: 679
Reply #2 on: Jun 18, 2013
the roots are 1.1 , - 3.2

so the vertex must be x = [1.1 + (-3.2)] / 2 = - 1.05 ( in the middle)


« previous next »
 

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

Did you know?

The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.

Did you know?

Always store hazardous household chemicals in their original containers out of reach of children. These include bleach, paint, strippers and products containing turpentine, garden chemicals, oven cleaners, fondue fuels, nail polish, and nail polish remover.

Did you know?

The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

The Two New Strands Form in Different Ways The Two New Strands Form in Different Ways
Stages of endometrial cancer. Stage I: Mutated cells arise from glandular epithelium of the endometr Stages of endometrial cancer. Stage I: Mutated cells arise from glandular epithelium of the endometr
A Woman’s Changing World A Woman’s Changing World
How to use the squeeze theorem to find the limit of a function How to use the squeeze theorem to find the limit of a function
Where and how sperm form. Where and how sperm form.
Video: Dendrite Animation

For a complete list of videos, visit our video library