Shading Regions Flashcards

GCSE Mathematics (Edexcel) 1MA1

Inequality symbols

< means 'less than', > means 'greater than', ≤ means 'less than or equal to', ≥ means 'greater than or equal to'.

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Terms in this set (10)

1

Inequality symbols

< means 'less than', > means 'greater than', ≤ means 'less than or equal to', ≥ means 'greater than or equal to'.

2

Shading for y > x

Shade the region above the line y = x.

3

Shading for y < x

Shade the region below the line y = x.

4

Shading for y ≥ x

Shade the region above or on the line y = x. Use a solid line to include the boundary.

5

Shading for y ≤ x

Shade the region below or on the line y = x. Use a solid line to include the boundary.

6

Dashed line in inequalities

A dashed line is used when the inequality is strict (< or >), meaning the boundary is not included.

7

Solid line in inequalities

A solid line is used when the inequality is inclusive (≤ or ≥), meaning the boundary is included.

8

Finding the region for multiple inequalities

Shade the regions for each inequality and identify the overlapping area that satisfies all conditions.

9

Testing a point in a region

Substitute the coordinates of a point into the inequalities to check if it satisfies all conditions.

10

Labelling regions

Clearly label the shaded region with 'R' or another identifier to show the solution area.

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