Question

Read the question in the picture .

Answer 1

Answer:

option a is correct..................mmm

Answer 2

Answer:

Ya, first one is correct.

Step-by-step explanation:

In a matrix, if you multiply something, you multiply it with every element.

$A=\left[\begin{array}{cc}1&2\\7&8\end{array}\right] \\kA=\left[\begin{array}{cc}k&2k\\7k&8k\end{array}\right]$

Hope it helps you.