Question

1. solve the system of equations:

x+3y=9

3x+9y=27

please solve to get the x and y solution

2. solve the system of equations, please state the x and y solution

9x-4y=23

15x+4y=41

3. solve the system of equations please state the x and y solution

x - y - z = 1

5x + 6y + z = 1

30x + 25y = 0

Answer #1

Use Scilab to solve the following set of nonlinear algebraic
equations: x^3y -4y^2 +3x = 1 and 6y^2 - 9xy= 5 with initial
guesses of x = 2, y = 2.

Solve the following system of equations.
{−x+4y−z=-4
3x−y+2z=6
2x−3y+3z=−2
Give your answer as an ordered triple
(x,y,z).

Sec 6.2
1.Write an augmented matrix for the following system of
equations.
9x-8y+6z=-1
7x-5y+2z=9
6y-8z=-9
The entries in the matrix are ?
2.use row operations on the augmented matrix as far as necessary
to to determine whether they system is independent, dependent, or
inconsistent ?
4x-6y+5x=-2
-8x+12y-10z=4
-12x+18y-15z=6
3. use row operations on the augmented matrix as far as
necessary to to determine whether they system is independent,
dependent, or inconsistent ?
5x-7y+4z=13
-5x+7y-4z=-15
-10x+14y-8z=-27
4. Solve the system by...

1) Solve the system of equations. Give your answer as an
ordered pair (x,y)
{y=−7
{5x-6y=72
a) One solution:
b) No solution
c) Infinite number of solutions
2) Solve the system of equations. Give your answer as an
ordered pair (x,y)
{x=2
{3x-6y=-30
a) One solution:
b) No solution
c) Infinite number of solutions

Solve the system
x
+
3y
=
0
x
+
4y
+
z
=
1
−5x
−
y
−
z
=
−1

4. Solve the system of equations.
2x – y + z = –7
x – 3y + 4z = –19
–x + 4y – 3z = 18.
A. There is one solution (–1, –2, –3).
B. There is one solution (1, 2, 3).
C. There is one solution (–1, 2, –3).
D. There is one solution (1, –2, 3).

Solve the system of linear equations.
3x-3y+6z=12
x+2y-z=10
5x-8y+13z=14

Solve the system of equations. Explain how please!
3x-5y+4z= -19
4x-3y-3z= -34
x-y+4z = 13

Use Gaussian elimination with backward substitution to solve the
system of linear equations.
x+y-z=-4
-x-4y+4z=1
-4x-3y+2z=15
What is the solution set?

Choose the augmented matrix that can used to solve this system
of equations:
3x+4y+2z=1
-2x+9y-z=0
-5y+21z=12

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