Using graphs to solve equations Extended Maths IGCSE Past Paper Question

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Plotting a cubic graph f(x) and solving equations of the form f(x) = k by finding the intersection between lines and curves. Also solve f(x) = ax+b by plotting a linear graph and finding the intersection between the cubic and the line. Full playlist of all IGCSE topics here:    • Number: IGCSE Maths Extended Cambridg...  

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