Algebra 2 ! i am terrible at algebra and i have loads of stuff to do today can you me with this? ? explain to me what the correct answers are and how to get them in preparation for the unit test!

These question are hard can you me with answers

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.

How can you find the magnitude of a vector, v = < x, y > , where the horizontal change is x and the vertical change is y?