Option B:
y = 6
Solution:
Given: Matrix A and Matrix B are equal.
That is elements of Matrix A and Matrix B are also equal.
To find the value of y:
In matrix A, the element in the first column second row is y + 4.
In matrix B, the element in the first column second row is 10.
Equating these two elements, we get
⇒ y + 4 = 10
Subtract 4 on both sides to equal the expression.
⇒ y = 10 – 4
⇒ y = 6
Hence the value of y is 6.
