Which describes the slope of this line? number graph ranging from negative three to one in increments of point five on the x axis and negative two to two in increments of point five on the y axis. a vertical line is drawn between x equals negative one and x equals negative one point five. a. positive slope b. undefined slope c. zero slope d. negative slope

The average number of vehicles waiting in line to enter a parking lot can be modeled by the function f left parenthesis x right x squared over 2 left parenthesis 1 minus x right parenthesis endfraction , where x is a number between 0 and 1 known as the traffic intensity. find the rate of change of the number of vehicles waiting with respect to the traffic intensity for the intensities (a) xequals0.3 and (b) xequals0.6.