Forming Quadratic Equations Using Vertex Form: When the vertex $(h, k)$ is known, substitute directly into the vertex form, $y = a(x – h)^2 + k$, and use an additional point to solve for $a$.

Forming Quadratic Equations Using General Form: For cases without a known vertex, use the general form $y = ax^2 + bx + c$ by plugging in three points to form three equations, then solve for $a$, $b$, and $c$.

Applying Quadratic Equations to Real-Life Scenarios: Use quadratic equations to represent a tunnel’s height, and assess if a lorry can pass.

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