Ch 2 Project: Ch 2.8 #63

CH 5 Determining the Number of Triangles in the Ambuguous case (SSA): A Contruction Exploration.

CH 4 How to Solve Problems with Trigonometry

CH 1 How to do Modeling with Functions and Regression Equations: Option 1 - Curve Fitting with Technology p156

 Thanh Nguyen P1


 

a) I went to http://weather.yahoo.com/


b) I chose 10 random cities and recorded their lowest and highest temperatures for 11/10/10.


c) I created the table with the data like p.156.


d) I entered all my data into my graphing calculator by pressing STAT, Enter, and then typed in my data. Low temperatures is L1 and High Temperatures is L2. Then I pressed STAT, RIGHT, 4, (2nd) L1, Comma " , " , (2nd) L2, and ENTER. Now I have my regression equation and correlation coefficient.


e) Then I chose 3 random cities out of the 10: Oakland, New York, and Washington. I took each of their low temperatures and placed them into the X of my equation.


f) The answers I received were close or correct to the data I collected from http://weather.yahoo.com/.

g) So the regression equation models the data closely well. And from step d, my correlation coefficient is r=.9213441179 and r^2=.8488749835.

CH P Applying Linear Equations in Two Variables

Option 4 - Chapter Opener Problem - The Speed of Light p36
Planet: Uranus

1. The first thing I did was replace the word problem with Uranus and gathered the required information from google.com.

2. I used the equation formulas that the book used in their problems: t=a/r, d=rxt, and d=rxt.

3. In all of the problems I simply plugged the numbers in: distance, rate, and time.

4. Then I solved after changing all the numbers into scientific form and got my solutions.

5. I also drew a picture to show my solutions.

Chapter P - Graphing Functions

In this post I shall demonstrate how to do transformations.

1. The function I used in this graph is y=x^3.

2. I graphed this function in black at the origin.

3. Now I did a vertical translation in red and moved up by five in the y-axis. Up means add and down means subtract in the y-axis. So I have to add by 5, y=x^3+5

4. Then I did a horizontal translation in blue and moved right by 5 in the x-axis. Moving left is adding and moving right is subtracting in the x-axis. So I subtracted x by 5, y=(x-5)^3

5. In green, I did both a horizontal and vertical translation. So I moved up 5 and right 5, y=(x-5)^3+5

6. In purple, I did a reflection by adding a negative sign to the x. This flips the shape upside down,  some shapes look the same even after being reflected.

7. Finally, in black I did a reflection, vertical, and horizontal translation. I moved the shape down 5 and right 5 then flipped the image. So the equation is y=(-x-5)^3-5

Thanh Scalar

Title:  Thanh N.
Education:
Bella Vista Elementary
Roosevelt Middle School
Oakland High School
What I want to be: Undecided
Interests: Play games, watch anime, read manga, listen

 to music, and sleep.