SOLUTION: Which of the ordered pairs (3,1((0,-4) (-4,0) (-3,-7) are solutions for the equation x-y=4 Please instruct on how to do this problem. Thanks

Algebra ->  Linear-equations -> SOLUTION: Which of the ordered pairs (3,1((0,-4) (-4,0) (-3,-7) are solutions for the equation x-y=4 Please instruct on how to do this problem. Thanks      Log On


   

Question 67356: Which of the ordered pairs (3,1((0,-4) (-4,0) (-3,-7) are solutions for the equation x-y=4
Please instruct on how to do this problem.
Thanks
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
TO SOLVE THESE PROBLEMS YOU NEED TO SUBSTITUTE THE (X,Y) VALUES INTO THE EQUATION AND SEE IT (X-Y)=4 IF THEY DO NOT THEN THE (X,Y) VALUES ARE NOT VALID.
IF (X-Y)=4 THEN THES ARE SOLUTIONS.
3-1=4
2 DOES NOT EQUAL 4 NOT A SOLUTION
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0-(-4)=4
4=4 THIS SET IS A SOLUTION
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-4-0=4
-4 DOES NOT EQUAL 4 NOT A SOLUTION
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-3-(-7)=4
-3+7=4
4=4 THIS ALSO IS A SOLUTION