Find a solution to the following system of equations.

Mathematics
Tutor: None Selected Time limit: 1 Day


Find a solution to the following system of equations.

- 2 x + y = - 3

- x + 2 y = - 3

a.  (–3, –9)

b.  (–21, –9)

c.  (3, 3)

d.  (0, 2)

Apr 29th, 2015

- 2 x + y = - 3

- x + 2 y = - 3

To eliminate y, multiply  eq.1 by 2  

- 4 x + 2y = - 6

- x + 2 y = - 3

Subtract  equation 2  from 3,

-3x = -3

 x=1
So y = -3 +2 = -1

The points are (1,-1).

Please check if the equations are correct.


Apr 29th, 2015

the second equation is  - x + 2 y = 3 

Apr 29th, 2015

- 2 x + y = - 3

- x + 2 y = 3

To eliminate y, multiply  eq.1 by 2 

- 4 x + 2y = - 6

- x + 2 y = 3

Subtract  equation 2  from 3,

-3x = -9

 x=3
So y = -3 +6 = 3

The points are (3,3).



Please let me know if you have any other questions and best me if you are satisfactory. 


Apr 29th, 2015

Are you studying on the go? Check out our FREE app and post questions on the fly!
Download on the
App Store
...
Apr 29th, 2015
...
Apr 29th, 2015
Dec 7th, 2016
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer