Question

http://media.education2020.com/evresources/3108-01-07/mc001-1.jpg
What is the rate change of the function?

Answer 1

They are basically asking you for the slope of the line.
Pick two different points on the line, lets say (1,-1) and (2,-3)
Now, to find the slope use formula (popularly know rise over run), rise is y axis and run is on the x axis.
slope, m=(y2-y1)/(x2-x1)
m=(-3--1)/(2-1)
m=(-3+1)/(2-1)
m=-2/1
m=-2

Answer 2

thanks once again :)