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difference between linear-quadratic and quadratic-quadratic equations

3 years ago

Answered By Emily D

Did you mean the difference between linear function and quadratic function? I've only seen linear-quadratic and quadratic-quadratic used to describe systems of equations so hopefully, these definitions help a little (feel free to shake your fist angrily at me if it does not)

LINEAR functions are one-to-one, meaning there are no exponents on either side. Because of this, your equation is a straight line. The slope - how much y changes when x changes - is constant and never changes itself.

QUADRATIC functions do not have a constant slope or rate of change. You can have exponents greater than 1 on the x-side.

 

Because of this, if we're looking at a system of equations:

LINEAR QUADRATIC - is a line intersecting a parabola

Example: 2(x-4)2 -12 = 7x+14

QUADRATIC QUADRATIC - is two parabolas intersecting

Example: 3x2 + 2x + 5 = 3(x+9)2 - 6