Friday

December 19, 2014

December 19, 2014

Posted by **Miley** on Monday, November 18, 2013 at 8:08pm.

Use the substitution method to solve each linear system:

-x+3y+1=0

3x-y+1=0

4x-3y=-13

-2x+y=4

Please help, thanks:):)!!!!

- TO ANY MATH HELPERS -
**Tim**, Monday, November 18, 2013 at 8:37pm1)

x= -.5

y= -.5

2)

x=.5

y=5

- TO ANY MATH HELPERS -
**Reiny**, Monday, November 18, 2013 at 9:04pm1.

from the 1st equation: x = 3y+1

into the 2nd:

3(3y+1) - y +1 = 0

9y + 3 - y +1 = 0

8y = -4

y = -1/2

sub into 2nd:

3x - (-1/2) + 1 = 0

3x = -3/2

x = -1/2

Do #2 the same way

from the 2nd: y = 2x+4

etc

(Just stating the answers is not acceptable and serves no purpose)

- TO ANY MATH HELPERS -
**Miley**, Monday, November 18, 2013 at 9:08pmOh thank you to both helpers!!! I have understood how to do it now:)

**Answer this Question**

**Related Questions**

maths - use the substitution method to solve the linear system. 1. 3x=9 -x+2y=9 ...

Math 2 questions - Use the substitution method to solve each linear system: -x+...

algebra - Requesting help. (I must reckon, that X is a variable, and y is y-...

Linear Equations - Can you please help solve this equation using the ...

math - Use a substitution method to solve the linear system 2a=8 a+b=2

algebra 1 - use the substitution method to solve the linear system. 9x+6y=3 3x-...

Algebra - Use substitution method to solve the linear system. Can someone please...

Algebra - Use the substitution method to solve the linear system. 1/8p+3/4q=7 3/...

algebra - Use the substitution method to solve the linear system. Thanks! s= t+4...

Algebra - -3x + 2y = 8 x + 4y = -4 use substitution method to solve the linear ...