Find k such that the function is a probability density function over the given interval. Then write the probability density function. f(x) = k e*, [3,9] k = (Type an exact answer.) The probability density function is f(x) = (Type an exact answer.)

use a graphing utility to graph the function. Determine whether the function f represents a probability density function over the given interval. If f is not a probability density function, identity the conditions that is (are) not satisfied   f(x)= 1/8 (0,8)