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numbers or expressions separated by plus or minus mathematical operators.
a test that determines whether or not a given graph represents a function.
a periodic function is one that repeats after a given interval. The period is therefore the...
points that lie on the same line (so that the gradient is the same at each point).
the graph of a quadratic function; or a graph with one vertical axis of symmetry and one turning...
trigonometric ratio, expressed as opposite side divided by hypotenuse.