« previous next »

Author Question: QUADRATICS: Find vertex from factored form without changing the form? (Read 1735 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?

Green tea is able to stop the scent of garlic or onion from causing bad breath.

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Instructions for Completing the CMS-1500 (02/12) Claim Form Continued Instructions for Completing the CMS-1500 (02/12) Claim Form Continued
How to use right endpoints to find an expression showing the area of a function How to use right endpoints to find an expression showing the area of a function
Find derivative using quotient rule Find derivative using quotient rule
Find the first derivative, second derivative, and third derivative for each of the following Find the first derivative, second derivative, and third derivative for each of the following
The age-adjusted rate of melanoma, a deadly form of skin cancer, from 1973 to 2000. Over that time p The age-adjusted rate of melanoma, a deadly form of skin cancer, from 1973 to 2000. Over that time p
Cost = $99.49; Rate of markup based on cost = 32%. Find the markup and selling price. Cost = $99.49; Rate of markup based on cost = 32%. Find the markup and selling price.
Video: Insulin (glucose uptake by body cells), glycogenesis and lipogenesis

For a complete list of videos, visit our video library