we know that
The range of a function is the complete set of all possible resulting values of the dependent variable (y, usually), after we have substituted the domain
case a) f(x) = + 6
the range is 6
case b) f(x) > –8
the range is the interval (-8,∞)
case c) f(x) > –6
the range is the interval (-6,∞)
case d) f(x) > 6
the range is the interval (6,∞)
case e) f(x) > 8
the range is the interval (8,∞)
