Dear students,

Today we went over Ex 9, 10, 12, 15, 17, and 18 of Ch.9 homework on the board, and went through Examples # 1 to 9 of Ch.10 System of Equations. Please check class notes here.

Please keep the three types of solutions of a system of 2 linear equations in mind:

• one solution: different slops, two lines intercepting at one point (the point represents the solution to the system of equations)
• no solution: same slope, different y-intercepts, two lines are parallel
• infinite solutions: same slope, same y-intercept, two lines merge into one line

Homework:

Pg 86-90, Ex 1- 25.  (Make sure to show your work and write your steps for each problem). Check the answer key on Pg 293-295, and fill in the Google Form here to let me know what questions you want Ms. Li to go over in the next class.

DeltaMath: Ch.10 Systems of equation

Some of you may know that the SAT test is going digital in 2023 (international students)/2024 (US students). Please take a moment to read the 2 articles below and learn more about the changes.

The SAT® Test Is Going Digital: What to Expect in 2023-2024

New SAT Format: Overview, How It Is Different From Old & Its Benefits

DeltaMath provides a free online practice platform for you where you can get instant feedback and step-by-step guild to each problem, as well as “help videos” (Plus Version). Please make good use of this resource and horn your math skills, which will surely benefit your SAT test and beyond.

Best,

Ms. Li

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