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We can express the equation of any circle in the form (x - a)^2 + (y- b)^2 = r^2. The centre of the circle is then the point (a, b) and its radius is ...

The gradient of a line in the form y = ax + b, where a and b are some numbers, is the number a.

So we need to get the equation 3x + 5y = 7 into the above...

For this question we will use the verb manger (to eat) as an example.

The perfect tense is used to describe an action which took place once in the past. You...

The first step in answering any question is to figure out what the question really means! Velocity is a term physicists use to describe not just speed, but speed in a particular direction. When we talk...

Most IB students pick HL Economics thinking it is an easy seven that can boost their total score. However, IB economics is one of the most instense courses offered by the IBO. There are five main steps...