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Mathematics Worksheet
🔗 Relations
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After this worksheet you can
Find the domain of a relation.Find the range of a relation.Recognise a reflexive relation.Recognise a symmetric relation.📚 Quick Recap
A relation describes how elements from one set connect to elements of another — the mathematical way of expressing 'is related to'.
🧠 Section A · Concept Check ● BEGINNER 4 × 1 = 4
1Domain of R = {(2,5),(4,7),(6,9)}:
2Range of R = {(2,5),(4,7),(6,9)}:
3Is R = {(1,1),(2,2),(3,3)} on {1,2,3} reflexive?
4Is R = {(1,2),(2,1),(1,1),(2,2)} on {1,2} symmetric?
🧮 Section B · Problem Solving ● INTERMEDIATE 2 + 3×3 = 11
5The is the set of first coordinates.
6The is the set of second coordinates.
7Find the domain of R = {(2,5),(4,7),(6,9)}.
8Find the range of R = {(2,5),(4,7),(6,9)}.
9Is R = {(1,1),(2,2),(3,3)} on {1,2,3} reflexive?
🚀 Section C · Challenge ● CHALLENGE 5
10Is R = {(1,2),(2,1),(1,1),(2,2)} on {1,2} symmetric?
💭 Reflection — the most useful thing I learned:
A ___/4 B ___/11 C ___/5 Total ___/20
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✂ answer key — fold or cut before handing out
1-A 2-A 3-A 4-A | 5 domain 6 range 7 = {2,4,6} 8 = {5,7,9} 9 = Yes | 10 = Yes