Answer:
1/4 y^2 =x
Explanation:
The equation for a horizontal parabola is
(y - k)^2 = 4p(x - h)
The vertex is (0,0).
Substituting that in
(y - 0)^2 = 4p(x -0)
(y )^2 = 4p(x)
Since this opens to the right, p is positive
y^2 = 4px
Divide each side by 4
1/4 y^2 = px
Letting p =1
1/4 y^2 =x