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Year 9 Maths Advanced Coordinate Geometry and Graphs

Direct Proportion

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Questions
Question 1
20489

The heat \(Q\) in joules is directly proportional to mass \(m\) in \(\text{kg}\) as shown on the graph.

a) Calculate the heat when mass is \(3.5~\text{kg}\).
b) Calculate the mass when heat is \(400~\text{J}\).

a) \(175~\text{J}\), b) \(8~\text{kg}\)

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