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The equations of the sides A B ,\ B C\ a...

The equations of the sides `A B ,\ B C\ a n d\ C A\ of\ "Delta"A B C\ a r e\ y-x=2,\ x+2y=1\ a n d\ 3x+y+5=0` respectively. The equation of the altitude through B is `x-3y+1=0` b. `x-3y+4=0` c. `3x-y+2=0` d. none of these

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