Grade 11Algebra
If 2x+y+k=0 is a normal to the parabola y^2 =-16x , find k
1 Answer
Arun
Approved Tutor Answer8 Years agoDear Aditya
The gen. eqn of the normal to y^2=-16x is y=mx + 8m + 4m^3
Compare the cofficients and k can be found.
As m=2
The eqn. is y= 2x+ 16 + 32
Therefore, K=48
Compare the cofficients and k can be found.
As m=2
The eqn. is y= 2x+ 16 + 32
Therefore, K=48
Regards
Arun (askIITians forum expert)
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