Study for Quiz on Friday on 3.4 and 3.5

Homework: pg 110 # 9, 13, 17, 23

Homework: pg. 106 # 64, 67 ;  pg. 108 # 74;  pg. 110# 3, 11, 15

Homework pg 102 # 1-5, 15, 19, 25, 27

Homework pg 96 # 4, 12, 28, 56

Reminder: Study for Quiz on units 3.2 and 3.3

Study for Quiz on 3.2 and 3.3 on Friday, 12/16

Quiz Monday on Quadratic Modelling 3.1

Homework due Tuesday # 3, 5, 7, 11, 25

Homework due Thursday, 12/8

pg. 90 # 1-11 odd, 13, 15, 21

Homework due Monday, 12/5

pg. 82 # 1-23 odd

Homework due Friday 12/5

pg. 76 # 19, 20, 24

Homework due Thursday 12/1

pg 74 # 1, 3, 5, 9, 11, 15, 17

Homework due Wednesday 11/30
page 64 # 53-65 odd, 73

Homework due Monday 11/28

pg. 62 # 36-40

Homework due Friday, Nov 11 pg. 54 # 1-3, 9, 15, 17, 23, 27

How to Use your TI-Nspire to Graph 3-Variable Equations

REMINDER: Study for Quiz 1.3 Tomorrow (Friday, Nov 4)

1. Press [DOC]→Insert→Graphs.
2. Press [MENU]→2: View→3: 3D Graphing.
3. Type a function in the box in the entry line, " z1(x,y)= "  
4. When finished typing function press [ENTER] to graph it.
5. Use your Touchpad keys to rotate the graph                                                                                                                                                        For fun, press [A] to auto-rotate the graph; pressing [R] allows you to manually rotate the graph again using your Touchpad arrow keys.

Link to Ti-Nspire Instructions with pictures

Homework:

pg. 48 # 3, 7, 11, 13, 15

Study for Quiz on Unit 1.3 Modelling with Linear Functions

Homework due Wednesday, Nov. 2

pg. 46 # 33, 35, 37

pg. 48 # 1, 2, 3

Linear Regression or "Line of Best Fit"

Homework due Thursday:  pg. 44 # 19, 22, 25 
                                            pg. 46 # 26, 30, 31, 34

Quiz 1.3 on Friday

Line of Best Fit on a TI-Nspire:

To enter data (x and y values)  in to the calculator:

        Start at “Home”, press [new document], save and name it. (starts with page 1.1)

To create a Line of Best Fit:

Step 1:  a) Press [menu] add Lists and Spreadsheets.
              b) At the top of the first column enter a name (you pick the name) for your x-variable
              c) At the top of the second column enter a name (you pick the name) for your y-variable.
              d) Enter the x-values (1 value in a box) under the first column

              e) Enter the y-values (1 vaue in a box) under the second column

Step 3. Press [menu], press [ 4 statistics], press [1 stat calculations], press [3 linear regression mx+b]

Step 4. See the pop-up menu:  

              a)  For X-list: Press [►] until you select the name of your first column then press [tab]

              b)  For Y-list: Press [►] until you select the name of your second column then press [tab]

              c) Press [Enter] or press [OK]

To create a scatter plot:  

Step 1:  a)  Press [CTRL], press [DOC] to add a page to your document.  (page 1.2) 

              b)  Press Data & Statistics, press [enter] 

Step 2:  a) Move curser to bottom center of graph paper and click on the box that appears,

              b) Choose the title you created for x- variables. 

              c) Move curser to left center of graph paper and click on the box that appears,   

              d) Choose the title you created for y-variables. 

To graph the Line of Best Fit on the scatter plot: 

                Press [menu], press [analyze], press [regression], choose Linear Regression (y=mx+b).


Note: Remember "r" is the "correlation coefficient" that ranges between -1 and +1. It tells us how well our data points fit the line. The closer "r" is to -1 or 1 means the closer the data points are to our Line of Best Fit.

Homework due Wednesday 10/26/2016

pg. 44  #11-14, 16,17

Homework due Monday 10/24/16

pg. 42# 1-4, 8, 10

Homework due Tuesday 10/18/2016

pg 38

# 18-20, 23-29, 34, 35

Homework due Monday 10/17/2016

pg. 36 # 1,2,3,6,10,11,12,14,15

Homework 10/12/2016

Ch 1.1 pg. 30

problems: 1,3,4,5,7,9,14,15,18, 23,26,32,33,34

Create a login for this math website

Follow the link below for a review and more examples of piecewise functions:

Create a login for Desmos with your name so that I can give you credit for viewing the material.

https://student.desmos.com/?prepopulateCode=d259

Homework Help Unit 0.6 Piecewise Functions

Homework Help Unit 0.6 Piecewise Functions

See below for additional definitions, examples, and explanations on how to solve the Piecewise Functions homework.


Defintions:

Evaluate  means solve the function f (x) using the given value of x. For example if: f (x) = x+2 Evaluate for f (-5) .... The answer is f (-5) = -5 + 2 = -3

Cost is the price paid for something. For example the newspaper's price is $1.50. So it costs me $1.50.

Explanation:

Question 54 on pg. 28 (is like question 59 on pg. 16) from your homework is asking you to write a function for cost C such that:

C = m₁x + b when x is greater than... and C = m₂x + b when x is less than ..... big hint: notice the total price of shirts drops when 50 or more shirts are ordered. What would happen to the Cost (y-value)?