Explore how to work out whether two variables are directly proportional with BBC Bitesize Maths. For students between the ages of 11 and 14. Work out whether quantities are inversely proportional, and ...
The cost of the pencils (C) is directly proportional to the number of pencils (n). When the proportionality sign (∝) is replaced with an equal sign (=), the equation is \(x = k y\). The constant value ...
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