MEDAL!!!!

Compare the rates of change of the following items.
http://prntscr.com/9j23mw
A)Item II decreases faster.
B)Item I decreases faster.
C)The items decrease at the same rate.

Question

MEDAL!!!!


Compare the rates of change of the following items.
http://prntscr.com/9j23mw
A)Item II decreases faster.
B)Item I decreases faster.
C)The items decrease at the same rate.

mathmale · Answer

The best way in which to approach this problem is to 
find the slope of each of the lines.

Do that, please.

anonymous · Answer

Medalll!!!!!!! It's not a very good word to start a question with. :))

anonymous · Answer

One who wanted to give the medal just left. :)))
So what should one do now when there will be no medal?

mathmale · Answer

In the first case, the line is described verbally, with two points given; in the other case the (second) line is described by a table of x- and y-values.  
Abdullah:  which methods have you used in the past to calculate slopes of straight lines when points are given?