Answer:
yeah draw a big marble that contains each color of these marbles , 3 blue ,4 green , 5 red. try it!
-5
Step-by-step explanation:
Rate of Change also slope
Slope = y-y1/x-x1 = tanα = y/x
15-5/2-4 = 10/-2 =-5
I don't know the exact answer but it is below 60
