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Find the image of the point `(4,-13)`in the line `5x+y+6=0.`A. (1,-14)B. (6,-15)C. (-1,-14)D. none of these |
Answer» Correct Answer - C Let `Q(x_(1),y_(1))` be the image of the point P(4,-13) in the line mirror `5x+y+6=0` . Then, the coordinates of Q are given by `(x_(1)-4)/(5)=(y_(1)+13)/(1)=(-2(5xx4-13+6))/(5^(2)+1^(2))` `implies (x_(1)-4)/(5)=(y_(1)-13)/(1)=1` `implies x_(1)-4=-5 and y_(1)+13=-1` `implies x_(1)=-1 and y_(1)=-14` Hence, the image of the point P(4,-13) in the line mirror `5x+y+6=0` is (-1,-14). |
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