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Function 2 is changing more rapidly

Step-by-step explanation:

We need to find the slope of each function to determine which one is changing more rapidly

m = (y2-y1)/(x2-x1)

Function1

(0,20)  and (5,0)

m = (0-20)/(5-0)

   = -20/5

  = -4

Function 2

(2,11)  and (4,2)

m = (2-11)/(4-2)

    = -9/2

 = -4.5

We do not care about the sign, just the number when we determine which one is changing more rapidly.  The sign tells the direction, the number tells the rate.

|-4| < |-4.5|

4 < 4.5

Function 2 is changing more rapidly