W) -7 is not a prime number; Ī§) e^(iĻ) = āe^(-iĻ) [e to the power of quantity I times pi equals negative e to the power of quantity negative I times pi]
Y) All pairs of perpendicular lines in the Cartesian plane have slopes that are negative reciprocals of each other
Z) There is no number a such that log(-a) [log of negative a] exists.
āļøAnswer:W) -7 IS NOT A PRIME NUMBER
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