Edexcel IGCSE Maths 复习笔记 2.17.2 Inequalities on Graphs - Interpreting
How do we interpret inequalities on a graph?
- First, see Inequalities and Straight Line Graphs
Once you do…
- Write down the EQUATION of each line on the graph
- REMEMBER that lines are drawn with:
A solid line for ≤ or ≥ (to indicate line included in region)A dotted line for < or > (to indicate line not included)
- REPLACE = sign with:≤ or < if shading below line ≥ or
> if shading above line(Use a point to test if not sure)
Worked Example
Worked Example
转载自savemyexam
