1.

Two verticess of a Triangle are (1,3) and (4,7) the orthocentre lies on the line x+y=3. the locus of third vertx is

Answer»

`x^2-2xy+2y^2-3x-4y+36=0`
`2x^2-4xy+3y^2-4x-y+42=0`
`3x^2+xy-4y^2-2x+24y-40=0`
`x^2-4xy+3y^2-2x-4y-40=0`

ANSWER :C


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