ceminess Posted January 22, 2004 Share Posted January 22, 2004 If x and y are positive integers, for which of the following ordered pairs (x,y) will the value of 9x-8y be least? [A] (1,1) (2,1) [C] (3,2) [D] (5,3) [E] (8,9) I want someone to explain why it is E and not A, please :D Link to comment Share on other sites More sharing options...
mooker Posted January 22, 2004 Share Posted January 22, 2004 Follow through the equation with the integers from a) and e) [A] 9(1) - 8(1) = 9 - 8 = 1 [E] 9(8) - 8(9) = 72 - 72 = 0 Link to comment Share on other sites More sharing options...
obiwong Posted January 22, 2004 Share Posted January 22, 2004 If x and y are positive integers, for which of the following ordered pairs (x,y) will the value of 9x-8y be least?[A] (1,1) (2,1) [C] (3,2) [D] (5,3) [E] (8,9) I want someone to explain why it is E and not A, please :D [A] (1,1) 9(1) - 8(1) = 1 [E] (8, 9) 9(8) - 8(9) = 0 0 < 1 QED Link to comment Share on other sites More sharing options...
ceminess Posted January 22, 2004 Author Share Posted January 22, 2004 lol thanks guys, i really must have a brainfart tonight or sumthin Link to comment Share on other sites More sharing options...
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