Assume you have collected data pairs (x, y) on a certain variety of tree. X is the number of weeks since the tree was planted and y is the height of the treein inches. A plot of the data points with the best-fit line is given below. What Age is predicted by the best-fit line for a height of 90 inches?

To diagonalize an nxn matrix a means to find an invertible matrix p and a diagonal matrix d such that a pdp d p ap or [1 3 dh epap 3 let a=-3 -5 -3 3 3 1 step 1: find the eigenvalues of matrix a "2's" step 2: find the corresponding eigenvectors of a step 3: createp from eigenvectors in step 2 step 4 create d with matching eigenvalues.