If is a point on the circle \( x^{2}+y^{2}=9, \mathrm{Q} \) is a point on the line \( 7 x+y+3=0 .... VIDEO
If \( \mathrm{P} \) is a point on the circle \( x^{2}+y^{2}=9, \mathrm{Q} \) is a point on the line \( 7 x+y+3=0 \), and the line \( x-y+1=0 \) is the
\( \mathrm{P} \)
perpendicular bisector of \( P Q \), then the coordinates of
W
\( P \) are
(1) \( \quad(3,0) \)
(2) \( \left(\frac{72}{25},-\frac{21}{25}\right) \)
(3) \( \quad(0,3) \)
(4) \( \left(-\frac{72}{25}, \frac{21}{25}\right) \)
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