Solve 6 over x minus 4 equals 4 over x for x and determine if the solution is extraneous or not. a) x = −8, extraneous b) x = −8, non-extraneous c) x = 8, extraneous d) x = 8, non-extraneous

Which function has an inverse that is also a function? a.{(-4,3), (-2, 7), (-1,0), (4, -3), (11, -7)} b.{(-4, 6), (-2, 2), (-1, 6), (4,2), (11, 2)} c.{(-4,5), (-2, 9), (-1,8), (4, 8), (11,4)} d.{(-4,4), (-2, -1), (-1,0), (4, 1), (11, 1)}