Question 1 [1 mark]
12 miles = 19.2 kilometres.
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12 miles = 19.2 kilometres.
32 kilometres = 20 miles.
The graph shows a direct proportion: each 1 miles is equal to 1.6 kilometres, so the line passes through the origin.
14 inches = 35 centimetres.
35 centimetres = 14 inches.
The graph shows a direct proportion: each 1 inches is equal to 2.5 centimetres, so the line passes through the origin.
6 feet = 180 centimetres.
210 centimetres = 7 feet.
The graph shows a direct proportion: each 1 feet is equal to 30 centimetres, so the line passes through the origin.
5 kg = 11 lb.
8.8 lb = 4 kg.
The graph shows a direct proportion: each 1 kg is equal to 2.2 lb, so the line passes through the origin.
10 lb = 4.54 kg.
2.27 kg = 5 lb.
The graph shows a direct proportion: each 1 lb is equal to 0.454 kg, so the line passes through the origin.
8 gallons = 36 litres.
27 litres = 6 gallons.
The graph shows a direct proportion: each 1 gallons is equal to 4.5 litres, so the line passes through the origin.
8 litres = 14 pints.
10.5 pints = 6 litres.
The graph shows a direct proportion: each 1 litres is equal to 1.75 pints, so the line passes through the origin.
3 hectares = 30000 m².
50000 m² = 5 hectares.
The graph shows a direct proportion: each 1 hectares is equal to 10000 m², so the line passes through the origin.
12 m/s = 43.2 km/h.
72 km/h = 20 m/s.
The graph shows a direct proportion: each 1 m/s is equal to 3.6 km/h, so the line passes through the origin.
45 cm³ = 45 ml.
80 ml = 80 cm³.
The graph shows a direct proportion: each 1 cm³ is equal to 1 ml, so the line passes through the origin.