What is the value of if ?
A. 2 B. 4 C. D. localid="1648213664321"
The value of y is .
As the matrices are equal, the corresponding elements are equal. Write the two linear equations to show this equality.
Substitute for x into and simplify.
Divide each side of by 2 to find the value of .
Therefore, option C is the correct answer.
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