For each of the following pairs of equations, find the point of intersection by adding the two equations together. Remember: you might need to change the coeffients and/or signs of the variables before adding.

Help!

x-y = -1

x+y= 9

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- February 16th 2009, 04:31 PMTaylorTeamEdward324Finding intersections by adding 2 equations
For each of the following pairs of equations, find the point of intersection by adding the two equations together. Remember: you might need to change the coeffients and/or signs of the variables before adding.

Help!

x-y = -1

x+y= 9 - February 16th 2009, 04:34 PMMush
- February 16th 2009, 04:40 PMTaylorTeamEdward324Can you break it down?
Okay? What I don't understand is how you got the -1 and why you have the x - y (x+y)... I don't understand what the reasoning is behind that. Could you explain that to me?

Thanks so much for helping me... I AM getting the same answer but not really understanding the way I'm getting it.. make sense? LOL

Thanks again!!!