We are starting a new unit involving many important objectives based around linear equations and functions. You will learn how to find the slope of a line, use slope-intercept form, find the equation of a line, graph linear and quadratic functions, and how to use direct and inverse variation to solve problems.But for today, we are going to focus on using two variables in equations. First, click on this link:http://home.sprynet.com/~smyrl/EQ6.HTMNotice, they mention "explicit form," this is what we will refer to as slope-intercept form.Next, read over pages 349 and 350 in your textbook. Then you can try a couple problems and post this on your blog. Do this by writing the equation for y in terms of x (ex. 3x + y = 7, so y = 7 -3x). Try #13-16 on pg. 351.Next, read pg. 353 and 354 from your textbook. Define all bolded words (skip abscissa) in your notebook (or on your blog if you want to) from those pages using this website, http://www.amathsdictionaryforkids.com/Go onto Study Island when you finish.
Page 51 Problems:
13.2x+y=6
y=6-2x
14.5x+y=7
y=7-5x
15.3x+2y=8
2y=8-3x
16.2x+5y=10
5y=2x-10
Thursday, March 12, 2009
Thursday, February 26, 2009
More Percents
1. Find the most current U.S. population of females or males 5,840,878
2. What was the U.S. population of females or males five years ago? 5,620,775
3. Find the percent increase/decrease. 3.92%
4. Based on the percent increase/decrease, with a population of 1000 people, how many females or males would there have been five years ago? 961
5. Find the percent of increase or decrease for these categories:
a) under 5 years old 3.85%
b) between 10-14 years old 7.95%
c) over 85 years old 28.09%
2. What was the U.S. population of females or males five years ago? 5,620,775
3. Find the percent increase/decrease. 3.92%
4. Based on the percent increase/decrease, with a population of 1000 people, how many females or males would there have been five years ago? 961
5. Find the percent of increase or decrease for these categories:
a) under 5 years old 3.85%
b) between 10-14 years old 7.95%
c) over 85 years old 28.09%
Thursday, February 19, 2009
Hi Class!We have been learning and working with percents in equations and proportions. Here is your assignment for today:You have just graduated college and have found your dream job as a vet. Let's pretend you will be making around $1200 per month, depending on overtime, bonuses, etc. Now here is the deal - you need to make sure you manage your money wisely. Answer the following questions:
1) Your rent plus utilities (gas, water, internet, phone, etc.) is $540 a month! What percentage of your monthly income is this?
45%
2) You spend about 6% of your income per month on your cell phone bill! What amount is this?
$72
3) You usually spend around $200 per month on groceries. Find this percentage.
16.7%
4) You spend about $40 per week on gas filling your car's gas tank! What percentage of your monthly income is spent on gas?
13.3%
5) You like to use the remaining money and split it - using 60% on entertainment (movies, shopping, etc.) and putting the other 40% in savings. About how much money is spent on entertainment and how much is put in savings?
Entertainment: $136.80
Savings: $91.20
1) Your rent plus utilities (gas, water, internet, phone, etc.) is $540 a month! What percentage of your monthly income is this?
45%
2) You spend about 6% of your income per month on your cell phone bill! What amount is this?
$72
3) You usually spend around $200 per month on groceries. Find this percentage.
16.7%
4) You spend about $40 per week on gas filling your car's gas tank! What percentage of your monthly income is spent on gas?
13.3%
5) You like to use the remaining money and split it - using 60% on entertainment (movies, shopping, etc.) and putting the other 40% in savings. About how much money is spent on entertainment and how much is put in savings?
Entertainment: $136.80
Savings: $91.20
Thursday, November 13, 2008
Have you seen gas prices lately??
One of your first posts were about filling your gas tank. Now, with the new gas price in the article, find how much it would cost to fill your tank. Find the difference between what you would have paid a month ago to now. One more thing - find me the lowest local gas price in Lake County!
With the new gas prices it would cost me $22.00 to fill up my gas tank. The equation I used was 10 gallons x $2.20=$22.00. With the gas prices before it cost me $34.00 to fill up my tank. The difference between the two prices is $12.00. I saved $12.00 with the lower gas prices. The lowest gas price in lake county is $1.97.
Now, although I actually don't mind filling my 12 gallon tank for $1.94 a gallon, I read the article below to learn more about why gas prices are falling. Check it out, especially paragraph 4. Write a paragraph about this article and what you learned.
I learned many things about why gas prices are falling and how the economy relates to gas prices and the consumption of gas. 60% of gas consumption is used to drive to work. I also learned that for every $1.00 decline in gas prices, U.S. consumers save $1 billion dollars. The last time gas prices declined so dramatically was in the early 1980s and the prices of gas stayed like this for a decade and a half. Something else new that I learned about China is that about 25,000 new cars hit the streets every day. I learned some interesting facts about China and the U.S.
With the new gas prices it would cost me $22.00 to fill up my gas tank. The equation I used was 10 gallons x $2.20=$22.00. With the gas prices before it cost me $34.00 to fill up my tank. The difference between the two prices is $12.00. I saved $12.00 with the lower gas prices. The lowest gas price in lake county is $1.97.
Now, although I actually don't mind filling my 12 gallon tank for $1.94 a gallon, I read the article below to learn more about why gas prices are falling. Check it out, especially paragraph 4. Write a paragraph about this article and what you learned.
I learned many things about why gas prices are falling and how the economy relates to gas prices and the consumption of gas. 60% of gas consumption is used to drive to work. I also learned that for every $1.00 decline in gas prices, U.S. consumers save $1 billion dollars. The last time gas prices declined so dramatically was in the early 1980s and the prices of gas stayed like this for a decade and a half. Something else new that I learned about China is that about 25,000 new cars hit the streets every day. I learned some interesting facts about China and the U.S.
Friday, October 31, 2008
Assignment #8
Something that was made clearer to me is multiplying polinomials with algebra tiles. One of the websites helped me to understand this concept. Something new I learned was that polynomial functions are a form of smooth functions.
Monday, October 13, 2008
Assignment #5-Graded
1)What article did you choose and why?
2)How does it relate to you?
3)What did you learn from reading this article?
1)The article I chose was "Hybrid vs. fuel efficient cars." I chose this article because my mom owns a hybrid and I wanted to see if a fuel efficient car was better than a hybrid.
2)It relates to my mom because she owns a hybrid car.
3)From reading this article I learned how hybrids are specialized vehicles and require more maintenance than other cars.
1)The article I chose was "Shutting off Water Leaks." I chose this article because I like the summer and this article reminds me of the summer.
2)This article relates to my family and me because earlier this year our sink had a leak.
3)From this article I learned a tip on how to save money. When washing your car you can fill up a bucket of water instead of letting the hose run the whole time.
2)How does it relate to you?
3)What did you learn from reading this article?
1)The article I chose was "Hybrid vs. fuel efficient cars." I chose this article because my mom owns a hybrid and I wanted to see if a fuel efficient car was better than a hybrid.
2)It relates to my mom because she owns a hybrid car.
3)From reading this article I learned how hybrids are specialized vehicles and require more maintenance than other cars.
1)The article I chose was "Shutting off Water Leaks." I chose this article because I like the summer and this article reminds me of the summer.
2)This article relates to my family and me because earlier this year our sink had a leak.
3)From this article I learned a tip on how to save money. When washing your car you can fill up a bucket of water instead of letting the hose run the whole time.
Saturday, October 11, 2008
Assignment #4 - Graded
This assignment is worth 15 points and will be due October 14, 2008. So, continuing on from Assignment #3, complete the following:
1) Check out this article:http://www.bts.gov/publications/omnistats/volume_03_issue_04/html/entire.html
2) Let's say you are an "average" American based on that article. How many total miles are spent driving to work in one week?
3) Now, if you are like a typical American, you are doing more driving than just to work and back. In an average week, I drive around 350 miles per week! Use this equation, 350/mpg x P = T (mpg = whatever your car's mpg is, P = local gas price, T = total cost) to find out how much you will spend on gas in one week.
Bonus - could you write an equation to find out how much you spend on gas in one month?And finally, if you didn't originally chose a hybrid car, are you interested in one now??!! If so, check this out: http://www.hybridcars.com/ and let me know what you think! ...And kudos to ones who already did! :)
2)15min. x 2(there and back)=30 min. 30 min x 5 days a week=150 min. a week
Final Answer: 150 min. a week
3)350/45 x 3.44=T 350/45=7.78 7.78 x 3.44= $26.76
Final Answer: $26.76 a week
1) Check out this article:http://www.bts.gov/publications/omnistats/volume_03_issue_04/html/entire.html
2) Let's say you are an "average" American based on that article. How many total miles are spent driving to work in one week?
3) Now, if you are like a typical American, you are doing more driving than just to work and back. In an average week, I drive around 350 miles per week! Use this equation, 350/mpg x P = T (mpg = whatever your car's mpg is, P = local gas price, T = total cost) to find out how much you will spend on gas in one week.
Bonus - could you write an equation to find out how much you spend on gas in one month?And finally, if you didn't originally chose a hybrid car, are you interested in one now??!! If so, check this out: http://www.hybridcars.com/ and let me know what you think! ...And kudos to ones who already did! :)
2)15min. x 2(there and back)=30 min. 30 min x 5 days a week=150 min. a week
Final Answer: 150 min. a week
3)350/45 x 3.44=T 350/45=7.78 7.78 x 3.44= $26.76
Final Answer: $26.76 a week
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