Questions
Let be a normal to the parabola . If
passes through the point (9, 6), then equation of
can not be
a
y−x+3=0
b
y+3x−33=0
c
y+x−15=0
d
y−2x+12=0
detailed solution
Correct option is C
Equation of a normal to the parabola y2=4x is y=mx−2m−m3 which passes through (9, 6) ifm3−7m+6=0⇒m=1,2,−3So equation of L can not bey+x−15=0.Talk to our academic expert!
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Locus of the point of intersection of the normals to the parabola which are at right angles is
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