unit+1+journals

1.1
during my three years in Malden High School I have been in algebra 1 cp, geometry cp, and now agebra 2 cp. I love doing exercises but i hate graphing. I like when the teacher teach me how to do an exercises many ways and that i could choose a way that i like, after this year i plan to go to college and choose a career. and i need this class to graduate because i m a senior and this is my last year of math and about MCAst I already pass it. My name is Jean Evens Lesaint and i lived with my parents and i have 2 sisters and i am a soccer player when i have my free time i watch movies and play video games. Also i m a quiet guy i like to be friends with everybody who want to.

__** 1.2: **__
1) 2( 1 x+ 4) = 5( 3+x -2) 2 + 2x+ 8 = 15+ 5x - 10 10 + 2x = 5+ 5x 2x - 5x = 10 + 5 3x= 15 x= 5

2) 10/2+ 10x + 40 = 30/5+ 10x-20 2(10+ 10x+ 40) = 5( 30+ 10x - 20 ) 20+ 40x + 80 = 150 + 50x - 100 100+ 40x = 50= 50x 100+ 50 = 50x - 40x 150= 10x x = 15

3) 5x + 40 = 6x - 20 5x+ 60 = 6x 60= 1x x= 60

4) -1x+ 40 = -20 add 20 in both side -1x/ -1x= 60/-1x x= -60

5)-1x= -60 x =60

6)x =60

7) 121+ 6= 300 126= 300

8) 34= 34

9) 34= 34

__** 1.3: **__ After spending time in class and at home solving a variety of equations, identify the type of problem that is the easiest for you to solve. Also identify the type of problem that you struggle with the most. Why is this type of problem the most challenging? Where do you make your errors most often? What tricks or reminders should you write here (in a different color) as a reminder to prevent that error in the future?

I think the equations are the easiest for me to do and the most strugglings things for me to do are the problems i find them comfusings I make errors sometimes i don t really understand what it says now i take a goog look before i start to resolve it. Answer; the most challenging is the fraction. the easiest is the one who doesn't have fraction. i like the one that you did in class today today the 1.2 linear equation. my mistake is when there is a fraction i always confuse about it, and i use the step that you give in class today .the step 2 is the division;

__** 1.4: **__
List the following words and give a mathematical definition in your own words on your wikispace.
 * Linear Function, a mathematical relation putting things by sets
 * Relation, when they are related to each others
 * Domain, a particular environment or walk of life add
 * Range, an area in which something operates or has power or control add to list
 * Increasing, when the things are getting up
 * Decreasing, when the things are getting down
 * Slope, the number next to the x
 * Intercept seize on its way add to list
 * Degree, a position on a scale of intensity or amount or quality

If you need assistance defining any of the words above, this site may be helpful... [|Vocabulary Help] Below there is a document which 4 linear graphs shown and 6 linear equations given. In a paragraph, describe how you matched each equation to its matching graph and the order in which you matched them. What graphical features did you look at or which parts of that equation did you focus on?

__** 1.5: **__
__**Relation :**__ A relation is just a set of ordered pairs. There is absolutely nothing special at all about the numbers that are in a relation. In other words, any bunch of numbers is a relation so long as these numbers come in pairs. Ex: - { (0,1), (55,22), (3,-50) } -

f(-3) = 4 f(2) = 6 f(6) = 4

4 = 9a - 3b + c 6 = 4a + 2b + c 4 = 36a + 6b + c

a = -1/10, b = 3/10, c = 58/10

f(x) = (-1/10)(x^2 - 3x - 58)

- f (x) = 2x + 4

2x + 4 = 0 x = -2

f(0) = 4




 * __ 1.6 __**:

[[#x-
]]====
 * [[image:nachellealgebra2cp/graph_A.JPG align="center" caption="graph_A.JPG"]] ||
 * graph_A.JPG ||

[[#x-
]]====

[[#x-
‍y=-2/3x+1]] ‍y=-2/3x+1 ======

[[#x-
‍2x+3y=3 for graph B]] ‍2x+3y=3 for graph B ======


 * [[image:nachellealgebra2cp/Graph_B.JPG align="center" caption="Graph_B.JPG"]] ||
 * Graph_B.JPG ||

[[#x-
‍-3x+y=2]] ‍-3x+y=2 ======

[[#x-
‍y=3x+2 for graph C]] ‍y=3x+2 for graph C ======


 * [[image:nachellealgebra2cp/Graph_C.JPG align="center" caption="Graph_C.JPG"]] ||
 * Graph_C.JPG ||

[[#x-
‍y=2x+3]] ‍y=2x+3 ======

[[#x-
‍-6x+3y=9 for graph D]] ‍-6x+3y=9 for graph D ======


 * [[image:nachellealgebra2cp/Graph_D.JPG align="center" caption="Graph_D.JPG"]] ||
 * Graph_D.JPG ||

__** 1.8: **__
__use those numbers to stop on every numbers per hour, for example if you stop on 30__ __you increase the higher number and decreasing__ the lower number..

[[#x-
--‍1=30 2=30 3=30 ‍4=30 5=40 ‍6=40 7=40 8=40 9=20 10=20 11=20 12=20]][[#x1.8:--Write a paragraph describing the walking pattern shown. Use as much detail as possible so that some one would be able to recreate this graph from your description.-1=30]]‍ 1=30 2=30 3=30 ‍ 4=30 5=40 ‍ 6=40 7=40 8=40 9=20 10=20 11=20 12=20 ==== = = = =

[[#x-
--‍1=30 2=30 3=30 ‍4=30 5=40 ‍6=40 7=40 8=40 9=20 10=20 11=20 12=20--‍Answer the following questions:]]‍Answer the following questions:====== > ======‍When is Anne driving the fastest? Explain how you found your answer.======

[[#x-
--‍1=30 2=30 3=30 ‍4=30 5=40 ‍6=40 7=40 8=40 9=20 10=20 11=20 12=20--‍she driving the fastest is when the number of mile per hour increase, 40 mile for the first one..]] ‍she driving the fastest is when the number of mile per hour increase, 40 mile for the first one.. ====== > ======‍What time is Anne stopped? Explain how you found your answer.======

[[#x-
--‍1=30 2=30 3=30 ‍4=30 5=40 ‍6=40 7=40 8=40 9=20 10=20 11=20 12=20--‍she stopped when the mile per hour is zero, by looking at the graph.]]‍ she stopped when the mile per hour is zero, by looking at the graph. ====== > ======‍When is Anne's speed decreasing? Explain how you arrived at your answer.======

[[#x-
--‍1=30 2=30 3=30 ‍4=30 5=40 ‍6=40 7=40 8=40 9=20 10=20 11=20 12=20--‍she decreasing every time she stopped.]] ‍she decreasing every time she stopped. ======
 * ======‍What is Anne's speed at 7 minutes?======

__** 1.9: **__

 * x || f(x) || Color ||
 * 0 ||  || __ Black __ ||
 * 1 ||  || __ Red __ ||
 * 2 ||  || __ Green __ ||
 * 3 ||  || __ Blue __ ||
 * 4 ||  || __ Purple __ ||


 * x || g(x) || Color ||
 * 1 ||  || __ Black __ ||
 * 2 ||  || __ Red __ ||
 * 3 ||  || __ Green __ ||
 * 4 ||  || __ Blue __ ||
 * 5 ||  || __ Purple __ ||