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Substituting into formulae

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Presentation on theme: "Substituting into formulae"— Presentation transcript:

1 Substituting into formulae
Example If A = 6 x m, find A when m = 3

2 Example If T = a + b, find the value of T when a = 7 and b = 6.

3 Example Given P = 2m + 2n, find P when m = 5 and n = 8.

4 Example If y = 2x + 4 work out y when x = 5 y when x = 8

5 Example If A = xy, find A when x = 9 and y = 7.

6 Example Evaluate y = mx – c when m = 2, x = 7 and c = 4

7 Example Use the formula v = u + at to find a) The value of v when u = , a = 2 and t = 5 b) The value of u when v = 6, a = 1 and t = 4 c) The value of t when v = 12, u = 6 and a = 3.

8 Example Given Work out G when x = 11, y = 16 and r = 3

9 Example If work out a when b = 10

10 Example Use the formula y = mx + c to find The value of m when y = 12, x = 3 and c = 3 The value of c when y = 15, m = 2 and x = 4.

11 Example The Roberts’ family visit the Zoo. What would be the total cost for two adults and three children? Zoo Price list Adult price £27 Child Price £18


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