Use a Determinant to Determine Whether the Points (-3, -9)

question 151

Multiple Choice

Use a determinant to determine whether the points (-3, -9) , (-5, -11) and (0, -7) are collinear.

• A) \(\left| \begin{array} { c c c }
• - 3 & - 9 & 1 \\
• - 5 & - 11 & 1 \\
• 0 & - 7 & 1
• \end{array} \right| = 2 \text {; therefore, the points are not collinear }\)
• B) \(\left| \begin{array} { c c c }
• - 3 & - 9 & 1 \\
• - 5 & - 11 & 1 \\
• 0 & - 7 & 1
• \end{array} \right| = 0 \text {; therefore, the points are collinear }\)

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