Coordinate Geometry & Graphs

Parabola Calculator

Find equation, focus, directrix, vertex, and latus rectum.

Coordinate Geometry & Graphs

Enter values

Private calculation in your browser
  1. 1EnterProvide the known values
  2. 2CalculateResults update automatically
  3. 3VerifyReview the details and units
Try an example

Use finite decimals. Comma-separated point or vector lists are labelled explicitly. Inputs stay on this device.

Result

Enter valid values to see the result.

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Understand the subject

What is Parabola?

A graph shows how one input changes another quantity across a coordinate system, including repeating or curved behavior.

Use it to see rate, shape, turning points, period, phase, or domain behavior rather than treating a result as a one-off number.

The relationship

Write the rule before calculating

See the structure

What the calculation is doing

Worked interpretation

Read the result in context

Vertex (0,0), p=1 has focus (0,1).

Interpret with care

Important boundary

A graph’s scale, domain, period, and phase conventions matter; a drawn curve is not proof of global behavior.

Use the Mathematics collection to move between connected concepts without duplicating the calculation.

Quick guide

How to use this calculator

  1. Select a supported direction or geometric form when modes are available.
  2. Enter the labelled coordinates, coefficients, distances, or transformation parameters.
  3. Read the primary result, then inspect classification, equation, closest-point, or graph details.

Calculation method

Apply the coordinate relationship

(x−h)²=4p(y−k) or (y−k)²=4p(x−h).

The calculator validates degenerate points, lines, planes, conics, coordinate-system domains, and bounded graph sampling before reporting a result.

Worked example

Worked example

Vertex (0,0), p=1 has focus (0,1).

(x−h)²=4p(y−k) or (y−k)²=4p(x−h).

Supported inputs

Precision and limits

Coordinate conventions

Cartesian coordinates use right-handed x, y, z axes. Polar and cylindrical azimuth is measured counterclockwise from positive x; spherical φ is the polar angle from positive z.

Numerical range

Inputs may be zero or have magnitude from 1e-100 through 1e100. Trigonometric angles are limited to ±1e9°. Fixed-step plots limit Lissajous frequencies to ±20 and polar frequencies to ±30, preserving at least 12 samples per cycle. Generated grids and plots use explicit point caps.

Precision and graphs

Calculations use double-precision arithmetic and normally display 12 significant digits. Graphs are bounded numerical visualizations, not proofs of global behavior.