Math

• kapag x^2 tas y^2 ung simula nasaan vertex?

  (0,0)
• focus kapag x^2=4py?

  (0,p)
• focus kapag x^2=-4py?

  (0,-p)
• focus kapag y^2=4px?

  (p,0)
• focus kapag y^2=-4py?

  (-p,0)
• Directrix ng x^2=4py?

  y=-p
• Directrix ng x^2=-4py?

  y=p
• Directrix ng y^2=4px?

  x=-p
• Directrix ng y^2=-4px?

  x=p
• pag positive ang p?

  Up and right
• Pag negative ang p?

  down and left
• p>0?

  upward
• p<0?

  downward
• Lr= 4p
• ano ang vertext ng lahat ng equations ng parabola na may h tas k?

  (h,k)