# A Clone of Your Test Section 1: Matrix Arithmetic (No Calculator) + ```A Clone of Your Test
Section 1: Matrix Arithmetic (No Calculator)

+
-
 3
-2

-1
*

*
 (2

=
)*
=
*
*
=
=
*

*
*
R
=
=
N
=
=


=
F
Brand-Switching Matrix
N
R
F
If the first matrix represents the number of brand owners this year, then how many customers will buy Fila 2 years from
now?
Section 2: Find the Equation for The Parabola (No Calculator)
 What is the equation for the parabola that passes through the ordered pairs
(-1, 12), (0, 3), and (3, 0) ?
 What is the equation for the parabola that passes through the ordered pairs
(-1, 7), (1, -1), and
(2, -14) ?
Section 3: Solve the System of Equation Using any Method
If there are no solutions or infinitely many solutions you must say which.
 x – y = 11
2x + y = 19
 5x + 4y = -30
3x – 9y = -18
 3x – 2y = 2
5x – 5y = 10
 2x + 8y = 6
-5x -20y = -15
 -14 = -20y – 7x
10y + 4 = 2x
Section 4: Solve Using the Substitution Method (You will not receive full credit if you don’t show substitution method
work.)
 y = 30
12x – 2y = 0
 x = -4
-3x – 2y = 0
 3x – y = 8
2x + 5y = 28
Section 5: Elimination Method (Show Your Work)
 3x + y = 13
x – 5y = 15
 6x – y = 14
2x + y = 12
 3x – 4y = 22
2x + 5y = 7
Section 6: Essay
Explain in detail, using words and mathematical symbols, why the matrix method for solving systems of equations
works.
Section 7: Graphing Systems of Linear Inequalities
Graph the following systems of Linear Inequalities (No Calculator)
 3x + y ≥ -3
x + 2y ≤ 4
 4x + 3y &gt; -6
X – 3y ≤ -9
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