number line method / sign chart method
Chinese equivalent: 数轴标根法
number line method / sign chart method A method to solve inequalities by marking the roots of a polynomial on a number line and determining the sign in each in…
Syllabus path: Sets and Inequalities › Basic Properties and Solutions of Inequalities › Quadratic Inequalities
CSCA Exam Prep
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CSCA Mathematics Exam Glossary
Definition
number line method / sign chart method A method to solve inequalities by marking the roots of a polynomial on a number line and determining the sign in each interval.
Related tutorial and examples
Quadratic Inequalities
Quadratic Inequalities Quadratic inequalities are a high - frequency topic in the CSCA exam. The core strategy is "Combining Algebra and Geometry"—using the graph (parabola) of the quadratic function y = ax²⁺bx + c to determine the range of x. 1. Standard Solution Steps Mnemonic:…
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