IGCSE Maths / Quadratic equations, curves and inequalities

Reading roots and the turning point from a curve

Edexcel International GCSE Maths (4MA1), chapter 22: Quadratic equations, curves and inequalities, specification point 3.3k-f. Part of the full course.

Read the revision notes · IGCSE Maths past papers

A quadratic graph shows the equation’s solutions where it crosses the x axis, and its turning point at the bottom or top of the curve. Reading these correctly helps you solve equations and describe the curve.

More lessons in Quadratic equations, curves and inequalities

• Solving quadratics by factorising
• Completing the square
• Completing the square with a negative coefficient
• Solving quadratics by completing the square
• The quadratic formula
• Forming quadratics from a context
• Drawing a quadratic curve
• Quadratic inequalities