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Answers by Jeffrey K.

You only need to ask yourself, "What number multiplied by itself will give me 9?" You will conclude that the answer is "plus or minus 3".  Don't forget the "minus 3"!

Hi.  You could also use the distance formula to find the distance between two points.  For two points (x1, y1) and (x2, y2)  the distance between them is found with the following formula: Distance = Square Root [ (x2 - x1)² + (y2-y1)²]  (i.e., the square root of the whole...