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anshu dhamiwal Grade:
        if image of the point (2,1) with respect to a line mirror be (5,2), find the equation of the miror..... 
7 years ago

Answers : (2)

parth pankaj tiwary
18 Points
										

Let point (2,1) be A and (5,2) be B......... First find the equation of AB..... which i hope u can easily find.


After that the slope of the so called mirror will be -3  as mirror is always perpendicular to the image.........


After that find the midpoint of AB..........For sure this point wil lie on the mirror........Now u got slope and a point.....


its easy to find the equation now....... the answer will be 6x+2y-24=0

7 years ago
Nehal Wani
21 Points
										

Mid Point Of (2,1) and (5,2) is (7/2,3/2)


Slope of line joining (2,1) and (5,2) : 1/3


Slope of mirror line : -3


Equation of mirror line: [y-3/2]/[x-7/2]=-3


(2y-3)/(2x-7)=-3


2y-3=21-6x


2y+6x-24=0


y+3x-8=0

7 years ago
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