Mathematics GCSE
Using graphs to find approximate roots
What Using graphs to find approximate roots means in Mathematics GCSE, as defined for AQA.
Definition of Using graphs to find approximate roots
Check what you remember
Read the wording for your board, then hide it and explain Using graphs to find approximate roots in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Plotting or reading the curve y = ax² + bx + c and identifying where it crosses the x-axis, as those x-intercepts are the approximate roots.
Topics that use Using graphs to find approximate roots
- Solving equations and inequalities (AQA GCSE)
Related terms
- Checking solutions by substitution
- collecting like terms
- completing the square
- Convergence
- Exact surd solutions
- Factorising quadratic expressions
- Graphical representation of inequalities
- Inequality notation and direction
Using Using graphs to find approximate roots in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Mathematics questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
Start free
All Mathematics GCSE termsA week of Premium from your first lesson · Then the free plan continues · No card, no charge