document.write( "Question 67282: Which of the ordered pairs (3,1), (0,-4), (-3,-7) are solutions for the equation x-y=4?\r
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Algebra.Com's Answer #47953 by ankor@dixie-net.com(22740)\"\" \"About 
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Which of the ordered pairs (3,1), (0,-4), (-3,-7) are solutions for the equation x - y = 4?
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\n" ); document.write( "Since they give the possible answers it's very easy. The ordered pairs represent x and y:
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\n" ); document.write( "Substitute the given values for x and y and see if the equation is true
\n" ); document.write( "Take the 1st ordered pair: x = 3; y = 1
\n" ); document.write( "x - y = 4
\n" ); document.write( "3 - 1 = does not equal 4 so this is not the solution:
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\n" ); document.write( "2nd ordered pair x = 0, y = -4
\n" ); document.write( "0 - (-4) = 4; a minus a minus is a plus, remember
\n" ); document.write( "0 + 4 = 4 so this is a solution
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\n" ); document.write( "3rd ordered pair: x = -3, y = -7
\n" ); document.write( "-3 - (-7) = 4
\n" ); document.write( "-3 + 7 = 4 is true so this is a solution also
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