You should be averaging one hour a day (seven hours a week) practicing your algebra skills. Your "homework" assignments are not designed to take that full hour. You should be practicing more than these simple assignments. Also remember that the Chapter 3 Wrap Up and Study Guide need to be completed before class on 10/12/2010.
p.116 (3,5,9,37) & p.122 (1,3,5,7,17,19,21,27)
37 comments:
September30, 2010
Journal Entry #12:
Today's lesson was on the Property of Equality.
1. Addition: If a = b then a + c = b + c.
2. Multiplication: If a = b then ac = bc.
3. Division: If a = b and c does not equal 0 then a/c = b/c.
:Example
x+7=2 Given
-7|-7 AdditionProperty of Equality
--------
x+0= -5 Simplify
x=-5 IdentityProperty of Addition
Also, I learned that the symmetric property meant that the order did not matter.
:: A=B is the same as B=A
haha! good job sindy!
Journal Entry- 9/30/10
Today in class I learned the properties of equalites and i also learned about the symmetric property of equality. There are 4 properties, the Addition Property of Equality, the Multiplication Property of Equality, the Subtraction Property of Equality and the division Prperty of Equalities.
Addition-
If a=b then a+c=b+c
Subtraction-
a-c=b-c or a+(-c)= b+(-c)
A minus c equals b minus c
or
A plus negative c equals b plus negative c
Example:
Division-
2x=18
2/2x=18/2
1x=9 Simplify
x=9
Subtraction-
x+10=5
-10 -10
x+0=5 Simplify
x=5
Addition-
y-6=-1
+6 +6
y+0=5 Simplify
y=5
The symmetric propertyt means that a=b is equivelent to b=a
Good job to both of you.
Journal Entries
Period 2:
Period 3:
Period 4:
Period 5: Sindy L.
Period 6: Alexa W.
I'm doing my journal entry tomorrow, right?
wait it goes in alphabetical order right? or not is it just random?
@ matthew
i think its just random, but i'm not sure
September 30, 2010
Today we took notes on the properties of equality. The four properties are the addition property of equality, the multiplication property of equality, the division property of equality, and the subtraction property of equality.We also learned the symmetric property which means that a=b is the same as b=a. examples of the other four properties are:
Multiplication- if a=b then ac=bc
Addition- if a=b then a+c=b+c
Division- if a=b and c doesn't equal 0 then a/c=b/c
some examples of problems are:
a) y-8= -3 given
+8 +8 additionprop.ofequality
_____________
y+0=5 simplify
y=5 identity prop. of addition
b) - 1/3 y=4 given
-3(-1/3 y)= -3 (4)multiplication prop. of equality
1y= -12 simplify
y=-12
identity prop. of multiplication
i have a question. is there an online algebra textbook?>
Journal entry 9/30/2010
We worked on the property of Equality.If a=b then your able to subtract or add a number to both (a) and (b) if the number is the same.(a+c=b+c, a-c=a-b)
y-9=-4
+9 +9
y+0=5
y=5
Journal entry 9/30/2010
We worked on the property of Equality.If a=b then your able to subtract or add a number to both (a) and (b) if the number is the same.(a+c=b+c, a-c=a-b)
y-9=-4
+9 +9
y+0=5
y=5
Journal entry 9/30/2010
We worked on the property of Equality.If a=b then your able to subtract or add a number to both (a) and (b) if the number is the same.(a+c=b+c, a-c=a-b)
y-9=-4
+9 +9
y+0=5
y=5
Umm...Aniedi, why did you post 3 times?
Journal Entries
Period 2:
Period 3: Brooke V. Aniedi U.
Period 4:
Period 5: Sindy L.
Period 6: Alexa W.
what should i do if i left my book in my locker?):
Do you write the properties and steps that we used on the side like on our notes today?
Do we have to do the stuff Mr. Gerson did on the board like the "given" and the properties?????
@gloria
I'm not sure i don't think so though i did it for the first few problems and then i didn't i aked just to make sure soooo ya.
asked i meant
Where is my class's jounal entries :O.... wait we didn't have journal entries for us today.....did we?
@Natasha: I think we do journal entries today.. so do we do the properties and the stuff on the side for the problems?
hayato... get it tomarow morning at 0 period
September 30, 2010
In class we learned about the property of equality. There are five property of equality which are the addition, subtraction, division,
multiplication, and the symetric.
For Example:
Addition and Subtraction Property of Equality
a=b then a+c=b+c a=b then a-c=b-c
x + 7 = 2 x + 7 = 2
+(-7) +(-7) or -7 -7
x + 0 = -5 x + 0 = -5
Final Answer : x=-5
Multiplication Property of Equality
-1/3 y = 4 a=b then ac=bc
(-3)-1/3 = 4
1y = 4
y = 4
Division Property of Equality
2y = 8
2y = 8 a=b then a/c = b/c
_______
2 2
1y = 4
y = 4
Symetric Property of Equality
12 = x + 6
-6 -6
6 = x + 0
6 = x
x = 6 <------ Symetric Property of Equality
@jennifer, i reely dunno. maybe u should ask mr.gerson. i want to know 2. :)
For 6th period when we got our homework back, are we supposed to re-do them and turn it in again tomorrow? Reply ASAP :D.
Journal Entries
Period 2:
Period 3:
Period 4: Brad L.
Period 5: Sindy L.
Period 6: Alexa W.
@Trisha just keep the work don't through it away...
for number 19, isnt the property of reciprocals involved too? should i write that?
Dude, Natasha, you totally skipped my period. :P
Journal Entries
Period 2:
Period 3: Brooke V. Aniedi U.
Period 4: Brad L.
Period 5: Sindy L.
Period 6: Alexa W.
I gave 5 examples today. I read the California state standard to you guys. Oh well. Here it is AGAIN copied from the California Department of Education website:
5.0 Students solve multistep problems, including word problems, involving linear equations and linear inequalities in one variable and provide justification for each step .
Why are some of you still trying to get out of doing your practice?
What is the property of reciprocals? That wasn't on the Table of Properties we have completed or in your notes.
You should all have your Table of Properties completed. If you have lost it, you need to print another one out from etusd and complete it. It will be due at the end of this chapter.
Brad, I think yours was right on target. You pretty much covered most of it.
the property of reciprocals or the property of multiplicative inverses
chapter wrap up is mandatory right?
@Eric ahahaha sorry i failed :P
Today in class we learned about the properties of equality. So if a=b then a+c=b+c or a+(-c)=b+(-c). We also learned aout the symetric property which means if a=b then b=a. In our notes we did examples then rote what we did and the properties we used.
September 30th
Journal Entry #12:
Almost everything I learned today in Algebra was based on each of the properties of equality. I already knew Addition and Multiplication propeties of equality,but something that was "some what" new was the Division and Subtraction properties of equality, because subtraction is the same thing as addition-example A.: a+(-c) = b+(-c)-Or even that division is the same thing as multiplication.
example B.: a/c = b/c is the same as a*1/c = b*1/c This all ties into:
y-8=4 Given
+8 +8 Addition Property of Equality
y-0=12 Simplify
y= 12 Identity Property of Additon
Also Symmetric Property of Equality= 6/7=x changes to x=6/7
Lastly, I learned that i should be spending an hour EVERY day doing algebra.
@property of multiplicative inverses: You are using the multiplication property of equality. Then, you might be using the property of multiplicative inverses on one side but not on the other. In which case you are just performing multiplication on both sides, so you can get away with simplify as your justification.
Today was the property of Equality
We learned the four equalities.
Addition: A=B then A+C=B+C
Subtraction:is the inverse of addition so just change the signs
Mulitiplication:If A=B then ac=bc
Division:If A=B then A/C=B/C
Example:
a+0=15
X=15Addition property of equlity
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