Answer:
Option D
Explanation:
Since, the line x−32=y+2−1=z+43 lies in the plane, lx+my-z=9, therefore we have 2l-m-3=0
[ ∵ normal will be perpendicular to the line]
⇒2l−m=3 .......(i)
and 3l−2m+4=9
[∵point(3,−2,−4) lies on the plane]
⇒3l−2m=5 ........(ii)
On solvubg Eqs(i) and (ii) , we get
l=1 and m=-1
∴l2+m2=2