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x 2 - 9x ≤ 36 1. Draw a graph. y = x 2 - 9x and y = 36 2. Find the points of intersection by solving x 2 - 9x = 36 x 2 - 9x = 36 x 2 - 9x - 36 = 0 (x - 12)(x + 4) = 0 Therefore, the lines intersect at x = 12...

Homeostasis is the process of maintaining a constant internal environment in the body. An example of this is maintaining the temperature of the body. Human body temperature must be maintained at 37ºC as this...

1. The Essay Question The first thing you should do when you get into the exam is to copy out the essay question title onto the top of your answer sheet. It may waste a minute or two of your answer time but ...

People doing mathematics at A-Level will be familiar with the concept of using x and y coordinates in the cartesian coordinate system. But introducing the idea of the polar coordinate system can be confusing...

When investigating graphs, you will often be asked to pick out features of the graph; stationary points being the most popular. You will need to know that a stationary point on f(x) can be found by solving t...