All real-life graphs can ... meaning This graph shows the cost of petrol. It shows that 20 litres will cost £23 or £15 will buy 13 litres. \(gradient = \frac{change~up}{change~right}\) ...
All real-life ... the graph has a particular meaning This graph shows the cost of petrol. It shows that 20 litres will cost £23 or £15 will buy 13 litres. Gradient = \(\frac{\text{change up}}{\ ...
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