+128475 3.
Multiply both sides by -8
-8x = y^2
We have the form
4px = y^2 ⇒ -8 = 4p ⇒ p = -2
The vertex of this parabola is (0,0)
The focus is ( 0 + p , 0 ) = ( 0 - 2, 0 ) = (-2, 0)
The directrix is x = 2
Last answer
4. Vertex (0, 0 ) Focus = (2.5, 0)
This parabola opens to the right
The form is
4px = y^2
p = 2.5 so
4 (2.5)x = y^2
10x = y^2 divide both sides by 10
x = (1/10) y^2
