{change~in~l} = £/l.\) The gradient shows the cost per litre. Petrol costs £1.15 per litre. The graph crosses the vertical axis at (0, 0). This is known as the intercept. It shows that if you ...
text{change in l}} = £/l\). The gradient shows the cost per litre. Petrol costs £1.15 per litre. The graph crosses the vertical axis at (0, 0). This is known as the intercept. It shows that if ...
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