Chapter 8.1, Problem 1E

In Exercises 1–4, write y as an affine combination of the other points listed, if possible.

1. $v_1=\left[\begin{array}{c}1\\ 2\end{array}\right]$, $v_2=\left[\begin{array}{c}-2\\ 2\end{array}\right]$, $v_3=\left[\begin{array}{c}0\\ 4\end{array}\right]$, $v_4=\left[\begin{array}{c}3\\ 7\end{array}\right]$, $y=\left[\begin{array}{c}5\\ 3\end{array}\right]$