medal to the best helper ! I cant seem to figure this one out :/

For problems 13 and 14, assign each letter and a blank space to a number as shown by the alphabet table below.

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 the matrix [1,-2]
[-3,7] encode the phrase "ONE QUESTION TO GO"

Question

medal to the best helper ! I cant seem to figure this one out :/


For problems 13 and 14, assign each letter and a blank space to a number as shown by the alphabet table below.

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 the matrix [1,-2]
                       [-3,7]  encode the phrase "ONE QUESTION TO GO"