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

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

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