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January 31, 2015

January 31, 2015

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:)

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