Find the points of intersection between the following equations for straight lines using the substitution method.

y=x+5 and 5x-y=-1

&

y=x-3 and 2x-y=7

thx

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- Nov 4th 2007, 11:41 PMMr RayonSubstitution method
Find the points of intersection between the following equations for straight lines using the substitution method.

y=x+5 and 5x-y=-1

&

y=x-3 and 2x-y=7

thx - Nov 5th 2007, 12:16 AMangel.white
- Nov 5th 2007, 06:21 AMMr Rayon
Is this right?

y=x-3

2x-y=7

2x-(x-3)=7

2x-x+3=7

x+3=7

-3 -3

x=4

y=4-3

y=1

So x=4 and y=1 (4,1) - Nov 5th 2007, 10:16 AMtopsquark
- Nov 6th 2007, 10:31 AMdravid2
oh i understand now