Tuesday

September 23, 2014

September 23, 2014

Posted by **B.B.** on Sunday, April 11, 2010 at 3:16pm.

Solve the system of equations by graphing. Then classify the system. 9x-6y=30, 6x-9y= -30. The solution is? Consistent or inconsistent, dependent or independent?

How would I graph this?

Thanks.

- Math -
**Damon**, Sunday, April 11, 2010 at 3:26pm9x-6y=30, 6x-9y= -30

divide everything by 3

3x - 2y = +10 multiply by 3

2x - 3y = -10 multiply by 2

9x - 6y = +30

4x - 6y = -20 now subtract

-----------------

5 x = 50

x = 10

20 - 3y = -10

3 y = 30

y = 10

straight lines

intersection at (10,10)

slope of first = 9/6 = 1.5

slope of second = 2/3 = .6667

first hits y axis at -5 and x axis at 10/3

second hits y axis at 10/3 and x axis at -5

**Answer this Question**

**Related Questions**

Univ of Phoenix - Solve the system of equations by graphing. Then classify the ...

alegebra - solve the system of equations by graphing. then classify the system ...

algebra - solve the system of equations by graphing. Then classify the system as...

math 117 - I made an error on the one before this because I did not enter the ...

Math - Solve the system of equations by graphing. Then classify the system.x+y=...

math 117 - Solve the system of equations by graphing Then classify the system as...

Math Help PLEASE - Solve the system of equations by graphing then classify the ...

algebra - answer to Solve the system of equations by graphing then classify the ...

Algebra - Solve the system of equations by graphing. Then classify the system as...

algebra - Solve the system of equations by graphing. Then classify the system. ...