Unit+6+Journal

__**6.1**__ For each of the groups below, identify the graph that does not belong and state your reasoning why that graph does not belong in your online journal.

Group 1 What does belong; g(x) = x5-2x+1 and k(x) = x2+5x+6 What doesn't belong; f(x) = 1/2x+3 this equation doesn't belong because it only has one x-intercept.

Group 2 Whats does belong; f(x)=x2 and g(x)=-3x-2 What doesn't belong; k(x)=x4-5x2+4 this equation doesn't belong because it has more than one x-intercept.

Group 3 What does belong; f(x)=-x3-1 and g(x)= -2x-4 What doesn't belong; k(x)= 3x5-5x+1 this equation doesn't belong because it has more than one y-intercept.

Group 4 What does belong; f(x)= -x6+2x2 and g(x)= -x4+3 What doesn't belong; k(x)= 1/4x+3 this equation doesn't belong because it has no y-intercept

Summarize the last two days of class in your online journal. We have discussed different methods for graphing polynomial functions in intercept form. In detail, explain the graphing method to a student who has missed the last two days.
 * __ 6.2 __**

This was really long ago and I don't remember what we did on those two days.

__** 6.3 **__ Watch the video below to complete the worksheet handed out in class. The examples on the handout are the same as the examples in the video, so complete the example along with the video. After completing the examples, do the practice problems on the handout as well. Be sure to complete the summary at the bottom of the handout.

All set and done on my handout and its in my binder.

__** 6.4 **__ In your online journal, reflect upon your performance and experience so far this year in Algebra 2 CP. Discuss your work ethic, effort, attitude and motivation. What are your goals for the rest of the a year? What do you need to do to be sure you reach your goal before the year is done? Based on what you have done so far and how you plan on improving the rest of the year, make a goal for your final grade for the year. Be sure this goal is a number grade, not just a letter grade.

This year during my Algebra 2 CP class I feel that I have done really well I put a lot of effort and time to work on the math problems given to me. I always have a positive attitude going into my math class because I enjoy it. My goal for the rest of the year is to do all my homework, get all my classwork done, study for test and quizzes, and get good grades on my tests and quizzes. What I need to reach my goal before the year is over is motivation to get everything done. My goal for a final grade is an 82.

__** 6.5 **__ On the handout from class, answer the questions as you watch the video. Once the video is complete, use the new method to complete the handout and the problem from the video.

All set and done on my handout and its in my binder.

__** 6.6 **__ Listed below are 6 graphs and 12 equations. Some equations are written in intercept form, and some in standard form. A single graph will match one of each type of equations. (2 equations per graph.)

In your online journal, explain your thought process and order of matching the equations and graphs together. [|Wikispace 6.6.doc]
 * For example t(x) and u(x) match graph 7 because ...**
 * What properties did you look at first? What types of equation did you match first?
 * What type of equation was the hardest to match?
 * How did you narrow down your choices?

Completed Activity (below doc)

Use the link below to graph both functions then answer the following questions in your online journal. [|Graphing Tool]
 * __ 6.7 __**
 * The average height (in inches) for boys ages 1 to 20 can be modeled by the function B(x) = -0.001x^4 + 0.04x^3 - 0.56x^2 + 5.5x +25, where x is the age (in years).**
 * The average height (in inches) for girls ages 1 to 20 can be modeled by the function G(x) = 0.00007x^4 - 0.00276x^3 - 0.012x^2 + 3.1x + 27, where x is the age (in years).**


 * What is the domain of both these function and explain why this domain is appropriate according to the context of the situation.
 * What is an appropriate range for each function. Explain why this range is appropriate according to the context of the situation.
 * Find B(7) and G(9). Write what this means in the context of the situation.
 * What year is the average height for boys the greatest?
 * What is the highest average height for the girls?
 * Describe the shape of the graphs. Why is this shape appropriate according to the context of the situation? Could you use this model to predict the height of a male at the age of 45? Explain.