I have no idea how to do this can someone please answer it.

What is the point-slope equation of a line with slope -5 that contains the point (6,3)

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.

What is the result of adding the system of equations? 2x+y=4 3x-y=6