Notes from Aqa (C4) - challenging parts

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Parametric Equations

Cartesian equations can be modified in order to seperate the x and y coordinates. This is achieved by using three variables.

Two equations that seperately define the x- and y- coordinates of a graph in terms of a third variable are called parametric equations.


Apply [a,b]: add a to the function for x and b to the function for y.

Stretch x-direction: multiply x function by required factor (similar for y -direction)

Reflect y-axis: multiply the x- function by -1; to reflect in the x-axis multiply the y - function by -1.

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