SL 2.4—Key graph features
- Syllabus
- First assessment 2021
- Objective
- —
- Level
- SL
Read key features as evidence about a function
Read key features as evidence about a function.
Intercepts, roots, extrema, symmetry, vertices and asymptotes answer different questions about a graph.
Worked example
For y=(x−2)²−9, the vertex is (2,−9) and roots are x=−1,5.
Worked example
Which feature gives break-even inputs? x-intercepts/roots.
Common boundary
A minimum point is not automatically an x-intercept.