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The Equation xy1x1y11x2y21=0\left| \begin{array} { l l l } x & y & 1 \\x _ { 1 } & y _ { 1 } & 1 \\x _ { 2 } & y _ { 2 } & 1\end{array} \right| = 0

Question 148

Multiple Choice

The equation xy1x1y11x2y21=0\left| \begin{array} { l l l } x & y & 1 \\x _ { 1 } & y _ { 1 } & 1 \\x _ { 2 } & y _ { 2 } & 1\end{array} \right| = 0 = 0 represents an equation of the line passing through distinct points (x1,y1) \left( x _ { 1 } , y _ { 1 } \right) and (x2,y2) \left( x _ { 2 } , y _ { 2 } \right) a. Use the determinant equation to write an equation of the line passing through the given points.
b. Write the equation of the line in slope-intercept form.
- (2,6) ( - 2,6 ) and (3,2) ( - 3,2 )


A) a. xy1261321=0;\left| \begin{array} { r r r } x & y & 1 \\ - 2 & 6 & 1 \\ - 3 & 2 & 1 \end{array} \right| = 0 ; b. y=8x10y = - 8 x - 10
B) a.xy1231621=0;\mathbf { a } . \left| \begin{array} { c c c } x & y & 1 \\ - 2 & - 3 & 1 \\ 6 & 2 & 1 \end{array} \right| = 0 ; b. y=4x+14y = 4 x + 14
C) a.xy1231621=0;\mathbf { a } . \left| \begin{array} { c c c } x & y & 1 \\ - 2 & - 3 & 1 \\ 6 & 2 & 1 \end{array} \right| = 0 ; b. y=8x10y = - 8 x - 10
D) a. xy1261321=0;\left| \begin{array} { r r r } x & y & 1 \\ - 2 & 6 & 1 \\ - 3 & 2 & 1 \end{array} \right| = 0 ; b. y=4x+14y = 4 x + 14

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