Alphabet is 0 - 25


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
 
Use this equation to decipher the code below : y = 2x + 4
 
22 - 12 - 40 - 44 - 40 ...... 8 - 32 - 44 - 30 - 42 - 38 - 52

 


To solve:

#1 What is the inverse function of y?

(Switch x and y and solve for y and replace y with f-1(x) to find inverse function. )

Inverse function: f-1(x) = (x - 4)/2

Plug each number in the code above into the inverse function f-1(x) = (x - 4)/2 to see what letter it represents.

f-1(x) = (22 - 4)/2 = 9 ................................... 9 = J
f-1(x) = (12 - 4)/2 = 4 ................................... 4 = E
f-1(x) = (40 - 4)/2 = 18 ...............................18 = S
f-1(x) = (44 - 4)/2 = 20 ...............................20 = U
f-1(x) = (40 - 4)/2 = 18 ...............................18 = S

f-1(x) = (8 - 4)/2 = 2.......................................2 = C
f-1(x) = (32 - 4)/2 = 14 ...............................14 = 0
f-1(x) = (44 - 4)/2 = 20 ...............................20 = U
f-1(x) = (44 - 4)/2 = 20 ...............................20 = U
f-1(x) = (30 - 4)/2 = 13 ...............................13 = N
f-1(x) = (42 - 4)/2 = 19............................... 19 = T
f-1(x) = (38 - 4)/2 = 17 ...............................17 = R
f-1(x) = (52 - 4)/2 = 24 ...............................24 = Y

 

"JESUS COUNTRY"

 

-AB