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Parabola is a locus of all points which are equally spaced from a fixed line and a fixed point. Parabola is obtained by slicing a cone parallel to the edge of the cone.
What is a Parabola Calculator?
'Parabola Calculator' is an online tool that helps to construct the graph of the given parabola equation. Online Parabola calculator assists you to graph the parabola in a few seconds.
How to Use Parabola Calculator?
Please follow the below steps to graph the parabola:
- Step 1: Enter the given parabola equation in the given input box.
- Step 2: Click on the "Compute" button to graph the parabola for the given equation.
- Step 3: Click on the "Reset" button to clear the fields and enter the different values.
How to Plot a Parabola?
Parabola is obtained by slicing a cone parallel to the edge of the cone. It is of U – shape as a stretched geometric plane.
The formula of a parabola is :
y = x2 (on the x-y axis)
For parabola, eccentricity is 1, that is, a : b = 1
Here, a is the perpendicular distance from the focus to a point on the curve and b is the distance from the directrix to the point.
Solved Example on Parabola Calculator
Plot the parabola given by the equation y2 − 4y + 4x − 4 = 0
The given equation can be rearranged as
(y - 2)2 = -4(x - 2)
This represents a parabola with vertex V(2, 2) and opening towards the left because a = –1 (negative).
The focus will lie at a distance of 1 unit to the left of (2, 2), i.e., at (1, 2). The directrix will lie 1 unit to the right of (2, 2), i.e. it will be x = 3.
The following figure shows this parabola:
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