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# Two perpendicular lines PQ and QR intercept at (1, -1). If the equation of PQ is...

### Question

Two perpendicular lines PQ and QR intercept at (1, -1). If the equation of PQ is x - 2y + 4 = 0, find the equation of QR

### Options

A) $$x-2y+1=0$$

B) $$2y+x-3=0$$

C) $$x-2y-3=0$$

D) $$2x+y-1=0$$

The correct answer is D.