SOLUTION: find the vertex, focus, and directrix of the parabola given by each equation. Sketch the graph. x^2 = -4y

Algebra ->  Length-and-distance -> SOLUTION: find the vertex, focus, and directrix of the parabola given by each equation. Sketch the graph. x^2 = -4y      Log On


   

Question 1052014: find the vertex, focus, and directrix of the parabola given by each equation. Sketch the graph.
x^2 = -4y
Answer by josgarithmetic(39613) About Me  (Show Source):
You can put this solution on YOUR website!
-4%28y-0%29=%28x-0%29%5E2

Directrix and focus each is 1 unit from the vertex (0,0).

graph%28300%2C300%2C-5%2C5%2C-5%2C5%2C-x%5E2%2F4%29