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3 (y + 4) - 2 (4y + 1)= 3y + 12 - 8y - 2= (3y - 8y) + (12 - 2)= 10 - 5y

This answer would be best shown using a diagram. However you must ensure that the graph crosses the x axis at -180, 0 and 180 degrees. Moreover it is also necessary that the student has included asymptote...

To answer this question you must use implicit differentiation due to there being both x and y terms. Consequently you must differentiate each term individually as you would usually (by multiplying by the ...

When dealing with a linear and quadratic simultaneous equation, it is best to use subsitution to approach it.I take the linear equation and put it in terms of one variable. In this case, to avoid fraction...

If the question is about something losing value, for example a cars value depreciates at a rate of 30% a year after 4 years how much will the car be worth? You are also given that at year 0 it was worth £...