Marilake Education Centre, Agincourt C.I. and Sir John A. MacDonald C.I.
"Teachers open the door, but you must enter by yourself."
(Chinese proverb)
Teacher Contact Information
Mr. Hin Lun Lee  Agincourt C.I.  Email: hinlunlee@gmail.com  Facebook: Click Here
Miss Jean Meng  Sir John A. MacDonald C.I. (2nd Semester)  Email: a_ajean@hotmail.com
Mr. George Tai  Sir John A. MacDonald C.I. (1st Semester)  Email: cslr134@hotmail.com
Feel free to email your teacher if you have questions or problems throughout the course.
Section Information and Course Rules is available here. A general information handout with all basic course information is available here (in PDF).
Links to Other Marilake Courses / Other Interesting Links
Pictures from award presentation last school year (2006/07)  http://marilake.spaces.live.com/photos/
Advertisement for Marilake (mostly in Chinese) (Feel free to print it out and pass it to your friends!)  Click here (in PDF)
Perfect gifts for your mathloving friends  Click here
Mathematics 9 (to review background material that you need in this course)  http://www.xanga.com/teacherwebsite
Mathematics 11 (to preview what you will learn next year)  http://termei.freeservers.com
Creative Writing Level 2  http://www.edu.yorku.ca/~Karrie_Cheung/0389DEDE000F4CB5
Course Announcements
June 13  Please note that the last few homework assignments have been revised since we (the instructors) first received them in August 2007. As a result, the solutions need to be rewritten. We will post the solutions once they have been rewritten. This can take a couple of weeks. Please be patient!
See you all tomorrow.
June 13  For Agincourt students only:
Class pictures taken last week can be downloaded by visiting the link in the course calendar below under week 31.
I would like to offer my congratulations to the following trophy winners. You will get your trophy from Principal Chow tomorrow during class time.
9 am  Oscar Chan (1st), Vincent Luong (2nd)
10 am  Keith Tong (1st), Joyce Cheung (2nd)
12 noon  Elliott Tin (1st), Alfred Sze (2nd)
2 pm  Amanda AuYeung (1st)
3 pm  Jimmy Fang (1st)
Please note that the number of winners is determined by the class size. This is why there are more winners in some classes than others.
May 30  Those of you who have not written the final exam should email your instructor if you haven't already made arrangements for making up the exam. Your exam papers will be returned to you in two weeks.
All exam papers have been graded for those of you who wrote the exam in Agincourt C.I. last Saturday. The following is a histogram of the marks:
The overall average is 56.61%. The 9 am class has a class average of 61.55%, 10 am  55%, 12 noon  53.41%, 2 pm  47.58%, and 3 pm  64.38%.
Most students passed the exam. Congratulations!
We will discuss more about these results tomorrow in class. See you then.
Click here for older announcements.
File Download
 The class notes are only provided as reference and for those students missing the class. Please take notes in class diligently. The lessons / black board notes will likely be more detailed than the notes posted here.
 Homework assignment solutions are posted here as well.
 All posted files require a password which is different every week. Your teachers will announce them in class.
 If your teacher forgets to announce a password or you forget the password for certain week(s), please email your teacher with your name, section code, and the week(s) desired and ask to have the password(s) emailed to you.
 All files in the same week will have the same password. For example, the assignment solution and notes for week 2 will have the same password.
 All posted materials are in PDF format. Please download Adobe Acrobat Reader if you don't have it installed on your computer already. You can download it for free from: http://www.adobe.com/products/acrobat/readstep2.html
 Please email your teacher if you find error(s) in the posted material.
 Although the notes and homework solutions may sometimes be posted before a class, DO NOT DOWNLOAD THE FILES YET as they may be updated before the class. You may download the files after the class.
Week  Unit Number  Class Date  Class Notes / Homework Hints / Homework Solutions 
2007  
1 
1 
September 8  
2 
2 
September 15  
3 
3 
September 22  
4 
4 
September 29 
Class Notes, Hints for Question 6, Homework Solutions Question: How do I find the equation in 4b and 4d? Answer: You use the chart at the bottom of page N3. Look at the chart. What is the y value and first difference for x = 1. Once you have these two expressions, equate them to the y and first difference for x = 1 in your question. You now have equations (1) and (2). This is just similar to question 3 in the class practice problems on page N4. Please make sure you understand that example. Question: What does question 7b mean in the week 4 homework? Question: I am not sure what question 7c is asking for. Answer: The question is basically asking you how many units (x) must be sold to make the maximum possible profit (y). You basically need to tell me what the x and y values are that will give you the maximum possible y. 
 
 
October 6 
No class  Happy Thanksgiving! 
5 
5 
October 13 
Class Notes, Homework Solutions Question: For the Quadratics II homework, for question 1, do we sketch both the new graphs from the original y=x^2? Answer: You need to sketch all four graphs in part (b) using the graph of y=x^2 (which you also need to sketch as well) using the transformation method I described in the last class. Be sure to label each graph you are drawing. I strongly recommend that you use colour pencils for this one and label the graphs. Question: For question number 5, what do you mean by the maximum or minimum value? Answer: By that I mean, "What is the maximum or minimum value of y?" Question: For stretching by factor of a , for example if i needed to stretch by factor of 2, the point (3,10) would be (6,10) or (5,10)? Answer: Note: Question: I don't understand how I'm suppose to get the vertex in question 7C. I know the Y value is 3 but how am I suppuse to get the X value? Answer: Actually, you made a mistake here. Question: I'm also not sure how to do question #10. Answer: Your final answer is in the form of y = a(x2)^2 + k. You need to substitute in the points (0, 17) and (2,5) into the equation. You then have 17 = a(02)^2 + k and 5 = a(22)^2 + k. You now have two equations and two unknowns. You should know what to do. After that, you know the values of a and k, you can then write out the entire equation in the form of y = a(x2)^2 + k. 
6 
6 
October 20 
Class Notes, Hints for Question 6, Homework Solutions Test 1 notice is handed out. Question: I don't understand the section "Check by formulas" in each part of question 2. What are we suppose to do there? Answer: For each part in question 2, I want you do apply completing the square technique to find out the axis of symmetry, vertex, and maximum or minimum value (be sure to indiciate whether it is a maximum or minimum). After you have done that, there are formulas at the bottom of page N2 that allow you how to find the three things directly. I have also derived the formulas in class. You can use these formulas to check whether you have done completing the square properly (and you can go back and fix your completing the square section if you did not do it properly). This is what I asked by "Check by formulas". 
7 
 
October 27 
Course Review and Preparation for Test 1 
8 
 
November 3 
Test 1 is being held in class. Good luck! Test 1 covers units #16. 
9 
7 
November 10  
10 
8 
November 17  
11 
9 
November 24 
Class Notes, Homework Solutions Question: Hi sir, I'm stuck on homework problem #3b. Can you help me out? Answer: You can find the definition of median here: Question: Can you help me out with question 9(b)i)? Can't we just use the line segment formula? Answer: You are suppose to use the distance from a point to a line formula in 9)b)ii). You will get the same answer as in 9)b)ii), but this is just another way of looking at the same problem. 
12 
10 
December 1  
13 
11 
December 8 
Class Notes, Homework Solutions Midterm Examination notice is handed out. 
14 
 
December 15 
Course Review and Preparation for Midterm Examination Notes from Review Class at Agincourt Review Exercise Solutions (as handed out in class) Please note that there is an error in this solution set for question 14 (b). You can download the revised solution for that question here. 
 
 
December 22 
No class  Merry Christmas! 
 
 
December 29  No class 
2008  
 
 
January 5  No class  Happy new year! 
15 
 
January 12 
Midterm Examination is being held in class. Good luck! Midterm Examination covers units #111 (everything up to and including week 13). 
16 
12 
January 19  
17 
13 
January 26  
18 
14 
February 2  
 
 
February 9 
No class  Kung Hei Fat Choi  Happy Chinese new year! Today is the third day of the year of the Rat. 
19 
15 
February 16  
20 
16 
February 23 
Hint on the Homework Assignment: For question 3 in the homework, all angles in the question are in radian. In general, if you see an angle WITHOUT the small circle in superscript (which represents degree), you should treat the angle in radian measure. Class Notes, Homework Solutions Test 2 notice is handed out. 
21 
 
March 1 
Course Review and Preparation for Test 2 Review Exercise Solutions (as handed out in class) 
 
 
March 8 
Class cancelled due to snow storm. As a result:

 
 
March 15 
No class  Enjoy your March Break! 
 
 
March 22 
No class  Happy Easter! 
22 
 
March 29 
Test 2 is being held in class. Good luck! Test 2 covers units #1216. 
23 
17 
April 5  
24 
18 
April 12  
25 
19 
April 19 
Class Notes, Homework Solutions Deadline for Early Bird Preregistration Discounts 
26 
20 
April 26  
27 
21 
May 3 
Class Notes, Homework Solutions Final Examination notice is handed out. 
28 
 
May 10 
Course Review and Preparation for Final Examination Review Exercises Solutions (as handed out in class) 
 
 
May 17 
No class  Victoria Day 
29 
 
May 24 
Final Examination is being held in class. Good luck! Final Examination covers units #121. 
30 
22 
May 31  
31 
23 
June 7 
Class Notes, Homework Solutions

32 
24 
June 14 
Class Notes, Homework Solutions Last Class  Report Cards Distributed (For Agincourt students only) Awards / trophies distributed  see http://marilake.spaces.live.com/photos/ for the pictures For pictures of award winners who take Math 10 in Agincourt, click here! 
 
 
June 21 
No class  Enjoy your summer! If ANOTHER class is cancelled in this school year due to whatever reason, this day will be used for the make up class. 
 
 
June 28  No class  Enjoy your summer! 
1 x 8 + 1 = 9
12 x 8 + 2 = 98
123 x 8 + 3 = 987
1234 x 8 + 4 = 9876
12345 x 8 + 5 = 98765
123456 x 8 + 6 = 987654
1234567 x 8 + 7 = 9876543
12345678 x 8 + 8 = 98765432
123456789 x 8 + 9 = 987654321
1 x 9 + 2 = 11
12 x 9 + 3 = 111
123 x 9 + 4 = 1111
1234 x 9 + 5 = 11111
12345 x 9 + 6 = 111111
123456 x 9 + 7 = 1111111
1234567 x 9 + 8 = 11111111
12345678 x 9 + 9 = 111111111
123456789 x 9 +10= 1111111111
9 x 9 + 7 = 88
98 x 9 + 6 = 888
987 x 9 + 5 = 8888
9876 x 9 + 4 = 88888
98765 x 9 + 3 = 888888
987654 x 9 + 2 = 8888888
9876543 x 9 + 1 = 88888888
98765432 x 9 + 0 = 888888888
Brilliant, isn't it?
And look at this symmetry:
1 x 1 = 1
11 x 11 = 121
111 x 111 = 12321
1111 x 1111 = 1234321
11111 x 11111 = 123454321
111111 x 111111 = 12345654321
1111111 x 1111111 = 1234567654321
11111111 x 11111111 = 123456787654321
111111111 x 111111111= 12345678987654321