The region R is shown on this grid - OCR - GCSE Maths - Question 12 - 2021 - Paper 1
Question 12
The region R is shown on this grid.
Region R is defined by four inequalities.
One of the inequalities is $x \geq 0$.
Use the symbols < and > to complete the other ... show full transcript
Worked Solution & Example Answer:The region R is shown on this grid - OCR - GCSE Maths - Question 12 - 2021 - Paper 1
Step 1
$y \ldots \frac{1}{2}x$
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Answer
To find the inequality, note that the line y=21x intersects the region R. Since region R is below this line, we use the inequality y<21x.
Step 2
$x + 2y \ldots 24$
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Answer
The line x+2y=24 indicates a boundary for region R. To determine the inequality, we observe that the region is below this line, hence we write x+2y≤24.
Step 3
$y \ldots x + 6$
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Answer
The line y=x+6 forms a boundary above region R. Thus, we express this inequality as y<x+6.
Step 4
Write down the new inequality.
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Answer
The new inequality that replaces x>0 and makes region R a kite is x≥0.