Page 149 (our front page, page 149 in the online textbook): #13, 15, 17, 19, 21
If you were absent today we learned about the leading coefficient test! You definitely want to get someone's notes! OR, take a look at page 141-142 of the online textbook for notes about the leading coefficient test! This is a great place to look even if you were here but you still have questions!
**When you check your answers in the back you will see the end behavior written in words--your answer should not be written this way, but instead should be written using the "limit notation" we discussed in class....Use the key below to help you check your work!
- Falls left: x--> - (infinity), f(x)--> - (infinity)
- Falls right: x--> + (infinity), f(x)--> - (infinity)
- Rises left: x--> - (infinity), f(x)--> + (infinity)
- Rises right: x--> -+(infinity), f(x)--> + (infinity)
Remember, with this notation, the "left/right" is what we show with our "x" (because the x axis runs left to right); if x is approaching negative infinity we're talking left, if x is approaching positive infinity we're talking right!
And for the falls/rises, we're showing "f(x)" or "y" (because the y-axis runs vertically, or down and up); if f(x) is approaching negative infinity, the graph is falling, and if f(x) is approaching positive infinity, the graph is rising.
Our section 2.l quiz on quadratics will be at the start of class on Friday!
- First question: given an equation, find the x-intercepts, y-intercept and vertex
- Second question: an application problem--study the baseball problem on the back of our weekend homework (#3) or on the back of the homework answer key I gave you!
See you tomorrow for more polynomials!
No comments:
Post a Comment