Answer:
FALSE
Step-by-step explanation:
the correct answer is FALSE
A matrix is said to be orthogonal when it is multiplied by its own transpose then the matrix comes out to be Identity.
the basic condition for a matrix to be diagonalizable is that the matrix should be symmetric.
but an orthogonal matrix is not necessarily symmetric so, the statement is false.
The slope m is found from the following formula:

The correct choice is -14.
It decreased from week one to week two by -1.875, then it started to increase from 0.625 then to 1.5 by week 4