Find the focus of the parabola y 6z 4 O A 30 B 150 Solution
     Find the focus of the parabola y\' - -6z. 4 O (A) -3,0) (B) (-15,0)  
  
  Solution
if the parabola equation is of the form y2=4ax, the coordinate of focus is (a,0)
In the give question, y2=-6x
Or, 4a=-6
a=-6/4=-1.5
Therefore,focus will be at (-1.5,0)
The correct option is (B)

