Use a Determinant to Determine Whether the Points (-5, 1) $\left| \begin{array} { c c c } - 5 & 1 & 1 \\- 8 & - 1 & 1 \\1 & 5 & 1\end{array} \right| = 0 \text {; therefore, the points are collinear. }$

Multiple Choice

Use a determinant to determine whether the points (-5, 1) , (-8, -1) and (1, 5) are collinear.

A) $\left| \begin{array} { c c c } - 5 & 1 & 1 \\- 8 & - 1 & 1 \\1 & 5 & 1\end{array} \right| = 0 \text {; therefore, the points are collinear. }$
B) $\left| \begin{array} { c c c } - 5 & 1 & 1 \\- 8 & - 1 & 1 \\1 & 5 & 1\end{array} \right| = 1 \text {; therefore, the points are not collinear }$