# Parametric form question

Jocey13
1. Homework Statement

Let: a matrix be: -5 -0.5
-0 -8

Find an invertible P and a diagonal D such that PDP(inverse)

2. Homework Equations

DET( (I)Lamda-A))= 0 for Eigenvalues

3. The Attempt at a Solution

when y=0 at the end matrix for finding the eigenvectors how do i make that a P