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b = (Fc-t^2)/4

In the form y = mx + c, m stands for the slope (or gradient) of the line, and c for its y-intercept. Since we are given two points that are on the line, we can figure out its slope by looking at the verti...

The rule for the discriminant: if b^2-4ac>0 then the quadratic has two roots if b^2-4ac=0 then the quadratic has one root ...

x is number of boys. y is number of girlsx + y = 200x = 3y4y = 200y = 50x = 1502/3 * 150 = 100 boys getting the bus

This seems like quite a simple question with an obvious solution, yet when I sat my GCSE's I remember struggling to determine what was important in a text to annotate or underline for future reference. Co...