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Take the graph y = x² - 2x + 5 for example:
In order to find the intersection with the y axis, set the x values in the equation equal to 0 as this is where the graph would cross the y axi...

Work out how many miles Dan does in a week if he drove. 24.2 x 5 = 121Work out how many gallons of petrol this would be. 121/32.3 = 3.746130031Convert into litres. 3.746130031 x 4.5 = 16.85758514Work out ...

x² + y² = 25 ...

dy/dx = u.dv/dx + v.du/dxu = x³, v = ln xdu/dx = 3x², dv/dx = 1/xdy/dx = 3x² lnx + x²

We multiply the 2x in the first bracket by everything in the second bracket to give: 2x²-2xWe then multiply the 3 in the first bracket by everything in the second bracket to give: 3x-3Putting 2...