Find the Vertex,focus,and Directrix of the Parabola $x ^ { 2 } + 4 y = 0$

question 71

Multiple Choice

Find the vertex,focus,and directrix of the parabola.​ $x ^ { 2 } + 4 y = 0$ ​

• A)Vertex: (0,0);Focus: \(\left( \frac { 1 } { 4 } , 0 \right)\) ;Directrix: \(y = \frac { 1 } { 4 }\)
• B)Vertex: (0,0);Focus: \(\left( - \frac { 1 } { 4 } , 0 \right)\) ;Directrix: \(y = \frac { 1 } { 4 }\)
• C)Vertex: (0,0): Focus: \(\left( 0 , \frac { 4 } { 4 } \right)\) Directrix: \(y = - \frac { 4 } { 4 }\)
• D)Vertex: (0,0);Focus: \(\left( 0 , - \frac { 4 } { 4 } \right)\) ;Directrix: \(y = \frac { 4 } { 4 }\)
• E)Vertex: (0,0);Focus: \(\left( 0 , - \frac { 4 } { 4 } \right)\) ;Directrix: \(y = - \frac { 4 } { 4 }\)

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