I'm working on the principle component analysis given the data in the attachment. I computed the covariance matrix then the eigenvalues, but computing the eigenvector using the first eigenvalue (0.049083402) I reached this step

0.567472154X + 0.615444444Y = 0

and

0.615444444X + 0.667472154Y = 0

How can I reach the eigenvector as this in the solution?

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