Posted by please i need help!!! i dont get it on Monday, January 17, 2011 at 6:52pm.
how do u answer this? please step by step
*graph and check to solve the linear system
y=x+3
y=x+1
Thank you very very much!!! :)

math(algebra 1)  helper, Monday, January 17, 2011 at 7:20pm
y = x + 3
y = x + 1
rewrite
y + x = 3
y  x = 1
to eliminate the variable x, add the 2 equations together. Since x + x = 0, the x variable is eliminated
ADD
y + x = 3
y  x = 1
2y = 4
y = 2
to find x, substitute y = 2 in
y + x = 3
2 + x = 3
x = 1
CHECK
x = 1, y = 2
y  x = 1
2  1 = 1
1 = 1
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