Problem

Does (−40,45) make the equation y=−x true?

Answer

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Answer

Not true, so (−40,45) does not make y=−x true.

Steps

Step 1 ：Substitute (x,y)=(−40,45) into y=−x.

Step 2 ：Calculate 45=−(−40).

Step 3 ：Not true, so (−40,45) does not make y=−x true.

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