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This is a typical simultaneous equations question. Using the information in the question we can write down two equations in two unknowns (let's say T=tea and C=coffee).(1) 3T + 2C = £7.80(2) 5T + 4C = £14...

plot the coordinates to obtain a straight line graphcalculate the gradient by using the equation m=change in y/change in xfind the point of interception by seeing where the line crosses the y axis, where ...

The elimination method
2x + 3y = 83x + 2y = 7
First we multiply one or both of the equations so that one of their like terms share the same coefficients.
2x + 3y = 8 (multi...

Income taxes in the UK are progressive in nature, where an increasing percentage of income is paid to the government depending on the individuals earning level. Because higher earners pay more than lower ...

Enzymes are biological catalysts that speed up the rate of biological reactions. The enzyme active site and the substrate are complimentary in shape. This allows the substrate to bind to the active site o...