1.3 Joint Variation

1.3 Joint Variation   1.3a Representing a Joint Variation using the symbol ‘α’. 1. If one quantity is proportional to two or more other quantities, this relationship is known as joint variation. 2. ‘y varies directly as x and z’ is written as y α xz. 3. ‘y varies directly as x and inversely z’ is … Read more

1.2 Inverse Variation

1.2 Inverse Variation If a quantity y  varies inversely as another quantity x, then (a) y increases when x decreases, (b) y decreases when x increases 1.2b Expressing an inverse variation in the form of an equation An inverse variation can be written in the form of an equation, y = k x where k is a constant which … Read more