Re-arranging formulae Literacy Can you define these keywords? Expression Variable Equation Subject Formula Coefficient Function Re-arrange Identity Factorise Inequality Expand Inverse Simplify Skills Practice Get “a” on own. 7p + 3a = 8 1 - 8a = 4t t = a + 11 5 3a2 = pt x(a + 2) = 7 a(p – 3q) = pq Make a the subject y + 5 = py a 3a + ap = 4p aq – ay = 3pt at + pq = 3(a +y) 5a – qt = p(a +3) Make x the subject y = Make a the subject Research Can you create your own examples for each keyword above. Make x the subject Memory Remember that re-arranging formulae helps save us time; rather than remember multiple versions of the same formula, we need to know only 1 version and through understanding we can deduce the other versions. Stretch Make c the subject for both answers Make Cos A the subject a² = b² + c² - 2bc CosA