## Linear

### F(x)= xD: all realsR: all realsX-int.: (0,0)Y-int.: (0,0)

Linear is a term used to describe things that are in a straight line or follow a pattern that can be represented by a straight line. In mathematics, linear refers to equations or functions that involve terms of the first degree only. This means that all variables are raised to the first power and there are no exponential or trigonometric functions involved.

Linear equations can be represented graphically as a straight line on a coordinate plane, where the slope of the line represents the rate of change of the variables involved. Linear functions are commonly used to model real-world phenomena such as population growth, inflation rates, and financial investments.

In addition to mathematics, the term linear is also used in other fields such as physics, where it refers to motion in a straight line without rotation or acceleration, and in electronics, where it refers to circuits that are designed to produce a linear response to input signals.

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