Question 630371
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
(2x - 8)^2 = 8y- 56
 2x^2 - 16x + 64 = 8y - 56
2(x-4)^2 -32 +64 = 8y - 56
2(x-4)^2 =  8y - 88
2(x-4)^2 = 8(y-11) 
(x-4)^2 = 4(y-11) 4p = 4, p = 1, V(4,11), F(4,12) directrix:  y = 10
y = (1/4)(x-4)^2 + 11   line of Symmetry is x = 4
{{{drawing(300,300, -20,20,-20,20,   blue(line(4,20,4,-20))  , grid(1),
circle(4, 11,0.6),
circle(4, 12,0.6),
graph( 300, 300, -20,20,-20,20, 0 ,10,(1/4)(x-4)^2 + 11 ))}}}