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9. Let M be the matrix of the reflection about the line passing through points Q(0,0) and R(-4,2). Find the first row of 20.M

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(9) GR :- Given points Q10,o) e R1-4,2) Equation of a line passing through = 0, y = 0, 2 = -4, I ₂ = 2 . y-y,= I2 - 3 (non) Y20.M = 20. 315 L-4/5 -4/5 -315 ] -4*20 120 20 -16 First row of 20.1M = [ 12,-16].

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