Let the normals at points \( A(4 a,-4 a) \) and \( B(9 a,-6 a) \) P...

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Let the normals at points \( A(4 a,-4 a) \) and \( B(9 a,-6 a) \)
P on the parabola \( y^{2}=4 a x \) meet at the point \( P \). The

W. equation of the normal from \( P \) on \( y^{2}=4 a x \) (other than \( P A \) and \( P B \) ) is:
(1) \( 5 x+y-135 a=0 \)
(2) \( 5 x-y+115 a=0 \)
(3) \( 5 x+y+115=0 \)
(4) \( 5 x-y-115 a=0 \)
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