Chapter 2.9, Problem 8E

Let b₁ = $\left[\begin{array}{l}0\\ 2\end{array}\right]$, b₂ = $\left[\begin{array}{l}2\\ 1\end{array}\right]$, x = $\left[\begin{array}{l}-2\\ 3\end{array}\right]$, y = $\left[\begin{array}{l}2\\ 4\end{array}\right]$, z = $\left[\begin{array}{l}-1\\ -2.5\end{array}\right]$, and B = {b₁, b₂}. Use the figure to estimate [x]_B, [y]_B and [z]_B. Confirm your estimates of [y]_B and [z]_B by using them and {b₁, b₂} to compute y and z.