Calculate the average rate of change from day 0 to day 6.Round to the nearest hundredth​

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

Aline has a slope of negative 1/4 the past two points -5/4 and 1 what is the equation of the line

1. 2y = 4 -x = -3 what is the solution to this system of equations? a) (2, 3) b) (-3, 2) c) (3, 2) d) (-3, 4) 2. 2x - y = 5 3x + 2y = 4 solve the system of equations. a) (3, 1) b) (0, 2) c) (2, -1) d) (9/7, 17/7)