SOLUTION: Find the vertex, focus and directrix of the parabola given by each equation. Sketch the graph.
a. x^2 = -4y
b. (y+4)^2 = -4(x-2)
c. x+y^2-3y+4 = 0
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Question 1040451: Find the vertex, focus and directrix of the parabola given by each equation. Sketch the graph.
a. x^2 = -4y
b. (y+4)^2 = -4(x-2)
c. x+y^2-3y+4 = 0
Answer by josgarithmetic(39613) (Show Source): You can put this solution on YOUR website!
The form in which your first two examples are written are very convenient for the question. Study these videos:
.
Derive equation for parabola given focus and directrix; vertex at orign
.
Similar, but different orientation, and vertex not at origin
Check this one for your last example: how to change quadratic equation from general to standard form, allowing you to figure out how to graph
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