« previous next »

Author Question: Quadratics stretching and vertex form help? (Read 1553 times)

federox

  • Sr. Member
  • ****
  • Posts: 308
on: Jun 18, 2013
Hi, so the questions tells me to...
Evaluate the following function at 3,-3,0, and z
D(r)= -(r-2)^2+8
I got the correct answers for the first three numbers but got "z" incorrect. Can someone please show me how to get the correct answer?

This is what I did...
D(z)= -(z-2)^2+8
= -z^2+4+8
= -z^2+12


curlz

  • Hero Member
  • *****
  • Posts: 538
Reply #1 on: Jun 18, 2013
-(r-2)^2+8=
-[r^2-4r+4]+8=
-r^2+4r+4


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Did you know?

There are more sensory neurons in the tongue than in any other part of the body.

Did you know?

Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

A computerized patient registration form used by offices with electronic health records. A computerized patient registration form used by offices with electronic health records.
A depiction of the amount of precipitin that would form with different ratios of antigen and ... A depiction of the amount of precipitin that would form with different ratios of antigen and ...
Write the equation in general form of the line passing through the point Write the equation in general form of the line passing through the point
Effect of pH on drug absorption. (a) A weak acid such as aspirin (ASA) is in a nonionized form in an ... Effect of pH on drug absorption. (a) A weak acid such as aspirin (ASA) is in a nonionized form in an ...
Shaking. A form of coarse vibration to a muscle or muscle group. Shaking. A form of coarse vibration to a muscle or muscle group.
6. Nitric oxide reacts with oxygen to form nitrogen dioxide: 2 NO(g) + O2(g) ⇌ 2 NO2(g) What ... 6. Nitric oxide reacts with oxygen to form nitrogen dioxide: 2 NO(g) + O2(g) ⇌ 2 NO2(g) What ...
Video: Oxygen transport: association and dissociation & Factors that affect hemoglobin's saturation with O2

For a complete list of videos, visit our video library