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
Subscribe to:
Posts (Atom)
