A direct-proportion graph
A direct-proportion graph
Secondary 2
6 marks
TGM Original Questions
For nonnegative quantities, \(y\) is directly proportional to \(x\). Given \(y=6\) when \(x=2\),
- find the equation;[2]
- form a table and draw the graph for \(0\le x\le4\), using integer values of \(x\);[3]
- explain how the graph shows direct proportion.[1]
Solution:
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Answer:(a) \(y=3x\). (b) Table: \(0,3,6,9,12\); see graph. (c) A straight line through the origin.
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