Posted by A.W. on Tuesday, February 17, 2009 at 2:46pm.
What is an non linear equation? Can you please show me an example.? This is all confusing to me.

Algebra  Reiny, Tuesday, February 17, 2009 at 3:06pm
A linear equation is any equation whose graph is represented by a straight line.
e.g.
y = 3x  5
or
4x + 5y = 67
the variables of both x and y must be of the first degree, that is, they cannot be squares, or cubes, or square roots, etc.
Anything else is a nonlinear equation, which means that their graphs are curves of some type
e.g.
x^2 + y^2 = 100  a circle
4x^2  3y^2 = 12  a hyperbola
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