Writing the equation of a parabola given the vertex and a point

The video tutorial explains how to derive the vertex form of a quadratic equation when given the vertex coordinates (H, K) and a point on the graph. The instructor demonstrates how to substitute these values into the equation to solve for the unknown variable 'a'. The process involves simplifying the equation, handling negative numbers, and ultimately deriving the final equation. The tutorial concludes with a clear explanation of the final vertex form equation.

Explain the process of simplifying the equation as described.

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What does the equation y = (1/3)X + 2^2 + 1 represent?

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