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What is HK in Math?

Published in Parabola Vertex 1 min read

In the context of mathematics, particularly when dealing with parabolas, (h, k) represents the vertex of the parabola when the equation is written in vertex form.

The vertex form of a parabola is given by:

y = a(x - h)² + k

Where:

  • (h, k) are the coordinates of the vertex of the parabola.
  • 'a' determines the direction and "width" of the parabola. If 'a' is positive, the parabola opens upwards; if 'a' is negative, it opens downwards.

Essentially, h represents the x-coordinate of the vertex, and k represents the y-coordinate of the vertex.

For example, if a parabola is given by the equation y = 2(x - 3)² + 4, then the vertex of the parabola is at the point (3, 4).