Matrix A:
1st Row: 1, 5
2nd Row: 3, 5
Matrix B:
1st Row: X
2nd Row: Y
Matrix C:
1st Row: 1
2nd Row: 5
Matrix A times Matrix B = Matrix C
So, Matrix B = (inverse of Matrix A) times Matrix C
Inverse of Matrix A
determinant = (1 * 5)  (3 * 5) = 20
new m
determinant = (3 * 3)  (2 * 5) = 1
new matrix:
1st Row = 3, 5
2nd Row = 2, 3
$\dfraccfw_1cfw_1 \times$ new matrix = new matrix
To find an inverse, multiply the inverse of the determinant by a new matrix (switch row1
column1 with the row2 column2 valu
(2 by 3) times (3 by 2) makes a (2 by 2) matrix.
To find row1 column1 of the (2 by 2) matrix,
multiply row1 of matrix A by column 1 of matrix B and add each individual product together.
To find row1 column2 of the (2 by 2) matrix,
multiply row1 of matrix
1. Factor the quadratic expression on the denominator.
2. Split the fraction accordingly
3. Multiply both sides of the equation by (x + 4)(x + 2)
4. Distribute
5. Factor the new expression so that the form on the right looks similar to the left side
6. Th
N=
Term
value
1
2
3
4
5
6
7
If you cannot see the table, hold CTRL and press the $+_cfw_=$ button at the top of the keyboard.
Since it is a geometric sequence, you know that "R" is a multiplier rate. Therefore, by using your
two given values of 16/3 and 6
Talib Williams
P7
Week One Assignment
The photo I chose is Facebook. This picture was the last one I looked at and it had an
immediate attraction to it because I felt like I already knew what is was saying. The picture is a
boy looking through a periscope
Write and graph each function.
1. y varies directly as x, and 2. y varies inversely as x, and
gy=30whenX:6. y:5whenx=3.
Determine whether each data set represents a direction variation, an
inverse variation, or neither.
3 II 4' 05
II 30
w
dig it v
DIRECT AND INDIRECT
Assignment # (a 7
VARIATION Name :(H ,Aria.
Pre AP Algebra II
Answer each question.
1. a. What is the constant of variation for the equation y = 5x? cfw_(15 5
b. Is this a direct or an inverse variation?  g; if; : Jr"
c. If y = 10,
ISO1030321;
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Global Journal of Agricultural Economics, Extension and
Rural Development
ISSN: 24085480 Vol. 3 (2), pp. 183187, February,
2015. Global Science Research Journals
http:/www.globalscienceresearchjournals.org/
Full Length Research Paper
Factors affecting s
ALGEBRA I (COMMON CORE)
The University of the State of New York
REGENTS HIGH SCHOOL EXAMINATION
ALGEBRA I (Common Core)
Tuesday, June 3, 20149:15 a.m. to 12:15 p.m., only
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Student Name: _ _ _ _

u.J_.:_v_w_.rJ+rY\
Graphing Linear Equations Worksheet
Answer Key
Drawing Lines in the Sand (On a Graph, We Mean)
Solve the following linear equations by graphing.
1. y = 2x, y = x 5.
3. y = 2, x = 2
y
y
(2,2)
x
x
(5,10)
2. y = 12 x, y = 4 x
4. y = 2x 5, y = 4x 10
y
y
( 8
www.MathWorksheetsGo.com
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I. Model Problems.
II. Practice
III. Challenge Problems
VI. Answer Key
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Answer Key
Unit 0: Linear Equations and Proportions
1
C
A.REI.1
2
B
A.CED.4
3
No, the student needs to switch the inequality symbol
after dividing by 5 on both sides. The answer should
read x > 12/5
A.REI.3
a.) P = 6r 20
4
A.CED.2
b.) $70
5
a.) Multiply
Regents Exam Questions
CC.A.REI.12: Graphing Linear Inequalities 1
Name: _
www.jmap.org
CC.A.REI.12 Graphing Linear Inequalities: Graph the solutions to a linear inequality in two
variables as a halfplane (excluding the boundary in the case of a strict i
Use your calculator:
For TiNspire:
1. press menu, go down to Matrix and Vector
2. choose Reduced RowEchelon Form and press enter
3. Press the button left of the library book button
4. Choose the option in the 2nd row and 6th column of the screen that po
Use your calculator:
For TiNspire:
1. press menu, go down to Matrix and Vector
2. Press the button left of the library book button
3. Choose the option in the 2nd row and 6th column of the screen that pops up
4. Press enter and choose the correct number
For the regular Ti84, press the STAT button and choose edit list. Then, type in your xlist into
the first column and your ylist into the second column.
\ \
Press 2nd, quit.
\ \
Then, press STAT again and go over (with the right cursor) to the Calc and