Answer:
y=x+6
Step-by-step explanation:
b: 4 x (2 x 9) = 72
c: 7 x (2 x 3) = 42
d: (3 x 5) x 5 = 75
e: (3 x 3) x 3 = 27
2 by 2
Since, given matrix has 2 rows and 2 columns.
So, Its a 2 by 2 order matrix.