Question 1180206


standard equation of parabola 

{{{4ay = x^2}}}

putting  {{{y = 4}}} and {{{x = 30}}} in above equation we get 

{{{4*a*4 = 30^2}}} 

{{{16a = 900}}}

{{{a = 900/16}}}

{{{a = 225/4}}}

so, the parabola equation is 

{{{4(225/4)y = x^2}}}

{{{225y = x^2}}}

{{{y = x^2/225}}}

{{{y = (1/225)x^2}}}


answer: c.{{{ y=(1/225)x^2}}}