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The Determinant xy1x2y21x3y31=0\left| \begin{array} { l l l } x & y & 1 \\x _ { 2 } & y _ { 2 } & 1 \\x _ { 3 } & y _ { 3 } & 1\end{array} \right| = 0

Question 58

Multiple Choice

The determinant xy1x2y21x3y31=0\left| \begin{array} { l l l } x & y & 1 \\x _ { 2 } & y _ { 2 } & 1 \\x _ { 3 } & y _ { 3 } & 1\end{array} \right| = 0 is the equation of a line through the points (x1,y1) \left( x _ { 1 } , y _ { 1 } \right) and (x2,y2) .\left( x _ { 2 } , y _ { 2 } \right) . Use this formula to find the equation of the line passing through the points (1,8) ( - 1,8 ) and (4,7) ( 4 , - 7 )


A) 5xy=35 x - y = - 3
B) 3x+y=53 x + y = - 5
C) 3x+y=5- 3 x + y = - 5
D) 3xy=53 x - y = - 5
E) 3xy=5- 3 x - y = - 5

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