Assign each letter and a blank space to a number as shown by the alphabet table.

0=_ 1=A 2=B 3=C 4=D 5=E 6=F 7=G 8=H
9=I 10=J 11=K 12=L 13=M 14=N 15=O 16=P 17=Q 18=R 19=S 20=T 21=U 22=V 23=W 24=X 25=Y 26=Z

use matrix [1 -2]
-3 7 and encode the phrase "One Question to go"

o=15
n=14
e=5
space=0
q=17
u=21
e=5
s=19
t=20
i=9
o=15
n=14
space=0
t=20
0=15
space=0
g=7
0=15
this is as far as I got - I do not understand how to finish it...please help me

The matrix is 2 x 2 with 1 and -2 on top and -3 and 7 on the bottom.

1 -2
-3 7

Please help me - I do not understand

Actually I may be wrong with each letter and the amount...not sure how to do these...

disregard

*whew* I had no idea how to apply the matrix to your calculations.

To finish encoding the phrase using the matrix [1 -2; -3 7], we can follow the steps below:

1. Split the given phrase into individual letters or characters: "One Question to go"
2. Assign the corresponding number values using the alphabet table:
- O = 15
- N = 14
- E = 5
- Space = 0
- Q = 17
- U = 21
- E = 5
- S = 19
- T = 20
- I = 9
- O = 15
- N = 14
- Space = 0
- T = 20
- O = 15
- Space = 0
- G = 7
- O = 15
3. To encode each letter, multiply the corresponding values of each row in the matrix by the corresponding letter value, then sum them up. Apply modulo 27 to ensure the final value falls within the range 0 to 26:

For the first letter "O":
Encoding for row 1: (1 * 15) + (-2 * 14) = -1 (mod 27) = 26
Encoding for row 2: (-3 * 15) + (7 * 14) = 93 (mod 27) = 12

The encoded value for "O" is 26,12 which corresponds to "Z,M" in the alphabet table.

Repeat this process for each letter and space in the phrase, using the same matrix:

O = 26,12
N = 8,15
E = 22,26
Space = 0,0
Q = 16,23
U = 12,19
E = 22,26
S = 13,6
T = 2,11
I = 2,23
O = 26,12
N = 8,15
Space = 0,0
T = 2,11
O = 26,12
Space = 0,0
G = 13,20
O = 26,12

Combine these pairs of numbers to get the encoded phrase:
"ZM HX VWAA IOYB SH KN ZM ABOK ZM YK"

Using the matrix [1 -2; -3 7], the encoded phrase for "One Question to go" is "ZM HX VWAA IOYB SH KN ZM ABOK ZM YK".