1.

The straight lines 3x + 4y - 5 = 0 and 4x -3y = 15 intersect at the point P. On these lines the points Q and R are chosen so that PQ = PR. The slopes of the lines QR passing through (1, 2) are

Answer»

-7, `(1)/(7)`
7, `(1)/(7)`
7, `-(1)/(7)`
3, `-(1)/(3)`

ANSWER :A


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