If \( x+p=0, y+4=0 \) and \( x+2 y+4=0 \) are concurrent, then \( p= \)
(a) 4
(b) \( -2 \)
(c) \...
If \( x+p=0, y+4=0 \) and \( x+2 y+4=0 \) are concurrent, then \( p= \)
(a) 4
(b) \( -2 \)
(c) \( -4 \)
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