Convert -5i to polar form

For what values of b will f(x)= logbx be a decreasing function? (16 )

Plz need answer now will mark which situations represent linear functions? check all that apply. a)the temperature rises and falls over the course of a day. temperature is a function of time. b)a baseball is hit into the outfield. the height of the ball is a function of time. c)a car goes 55 mph on the highway. distance is a function of time. d)a child grew 2 inches this year and 1 inch last year. height is a function of time. e)a movie director makes 2 movies per year. the number of movies is a function of the years.

Plz i beg u asap ! what is the equation of this graphed line? enter your answer in slope-intercept form in the box.