The equation of a straight line can be worked out using coordinates and the gradient, and vice versa. Practice determining the equation of a straight line ahead of your National 5 Maths exam with this ...
In this graph, 𝑥 and 𝑦 are directly proportional. This means that when 𝑥 doubles, 𝑦 also doubles, and when 𝑥 triples, so does 𝑦. In fact, for all coordinates on this line, you could multiply or ...
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