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6.3

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Sub sections and their related questions

Quadratic models.

Quadratic functions and their graphs (parabolas): \(f\left( x \right) = a{x^2} + bx + c\) ; \(a \ne 0\)

Properties of a parabola: symmetry; vertex; intercepts on the \(x\)-axis and \(y\)-axis.

Equation of the axis of symmetry, \(x = \ - \frac{b}{{2a}}\).