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Year 11 – Math Studies 1 Chapter 13 Pages 376 - 378

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The graph will form a parabola. Each graph will have either a maximum or minimum point. There is a line of symmetry which will divide the graph into two halves.

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x = 3

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x = 2

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When a quadratic function is in standard form The equation of the line of symmetry is y = ax 2 + bx + c,

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For example… Find the line of symmetry of y = 3x 2 – 18x + 7 Thus, the line of symmetry is x = 3. Using the formula…

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A companys weekly profit, in riyals, is modeled by the function Where u is the number of units sold each week. Find a.The maximum weekly profit b.The loss for a weeks holiday period, where no units are sold c.The number of units sold each week at break-even point for the company

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Chapter 9.1 Notes. Quadratic Function – An equation of the form ax 2 + bx + c, where a is not equal to 0. Parabola – The graph of a quadratic function.

Chapter 9.1 Notes. Quadratic Function – An equation of the form ax 2 + bx + c, where a is not equal to 0. Parabola – The graph of a quadratic function.

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