In how many ways the number on the clock face be arranged??

479001600

Step-by-step explanation:

12*11*10*9*8*7*6*5*4*3*2*1=479001600

or 12!=479001600

 b) y= -1/5 x + 1/10

has the same slope as the one represented in the table

Step-by-step explanation: (construct the table to see corresponding x & y)

The values 7/50 and 3/50 are clues that the constant is probably 1/10

So y= -1/5x + 1/10 is the most likely.

Try some values substituted for x

-1/5(-1/2) +1/10 = 1/10 + 1/10 = 1/5   The first x produces the first y in the table

-1/5(-1/5) + 1/10 = 1/25 + 1/10  

change to common denominator 2/50 + 5/50 = 7/50 The 2nd x gets the 2nd y

-1/5(1/5) + 1/10 = -1/25 + 1/10   -2/50 + 5/50 = 3/50 Also a corresponding result.