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## Answers

A quadratic function is a relation between two variables wherein for every value of the independent variable (usually "x", the domain), there is exactly one corresponding value for the dependent variable (usually y, the range). Function is given for the purpose of graphing.

Quadratic funtion is expressed as:

f(x) = ax² + bx + c

f(x) is actually y. So it's also y = ax² + bx + c