If x/|y| = -1 which of the following must be true?	Choose the most appropriate option.
A) x^1 = y^1  B) x^3 = y^3  C) x^4 = y^4  D) x^5 = y^5  E) x^2 = y^2
x/|y| = -1   |y| = -x, this implies that x is 0 or negative.   Square: y^2 = x^2.   Answer: D.   Alternatively you can try number plugging: try x = -2 and y = 2 or -2. You'll see that only E is always true.   Answer x^2 = y^2
<result>E</result>
If x/|y| = -1 which of the following must be true?