Determine whether the set is well defined. the set of people who wear expensive perfume.

Yes, the set of people who wear expensive perfume is well-defined. A set is said to be well-defined if its definition assigns it a unique value. Otherwise, the set is said to be not well-defined or ambiguous."Well-defined” means that any given object in the entire world, whether abstract or concrete is either an element of the set or isn't.

You would need a laid out graph for this but could you provide a picture of just a graph? i can give stepssolve for y.subtract 4xdivide by -1 (opposites)graph slope intercept formcheck each point to see if it’s on the graph