Posted by Anonymous on Saturday, October 24, 2009 at 1:59pm.
Determine whether the statement is true, false, or sometimes true. Explain or show why.
If x is positive and y = x, then xy is negative.
Is this always true or sometimes true?

Math  LALA, Saturday, October 24, 2009 at 3:20pm
False. If x is positive and you put a negative in front of it, you have to divide by negative one which would then give you positive x again. If you multiply a positive x and a positive y then xy is positive. False. Hope that helps.!!!:)

Math  PsyDAG, Sunday, October 25, 2009 at 11:51am
If y = x, the xy = x(x).
What do you get when you multiply a positive by a negative?
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