Which vector matrix represents the reflection of the vector < -1,5> across the line x = y

Step-by-step explanation:

We want to reflect this 2x1 vector on the line y = x.

To make this reflection we must use the following matrix:

Where R is known as the reflection matrix on the line x = y

Now perform the product of the vector <-1,5> x R.

The vector matrix that represents the reflection of the vector <-1,5> across the line x = y is:

Step-by-step explanation: I got this right on Edmentum.