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It was in "La Géométrie" that Descartes first proposed that each point in two dimensions can be described by two numbers on a plane, one giving the point’s horizontal location and the other the vertical location, which have come to be known as Cartesian coordinates.

http://www.storyofmathematics.com/17th_descartes.html

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why life

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https://www.geogebra.org/m/pHC4xjqT#material/hHfvzWw8 is cooooooooooooooooooooooolllllllll

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frech dude

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this wasnt a good idea

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a,b and c are known quantitys and x,y and z are unknow

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"As a point moves along a curve, then, its coordinates change, but an equation can be written to describe the change in the value of the coordinates at any point in the figure."

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it's fun to drag the coordinate thingys around on the geogabra.

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he was frech

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Descartes made the connection between geometry and algebra.

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there are four quadrants in a coordinate plane.   Newton and Leibniz discovered calculus

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he was the guy that said “I think, therefore I am”

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you can put any equation in a coordinate plane

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that a b c means a known number and x y z means an unknown number i guess

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math

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It was in "La Géométrie" that Descartes first proposed that each point in two dimensions can be described by two numbers on a plane, one giving the point’s horizontal location and the other the vertical location, which have come to be known as Cartesian coordinates. He used perpendicular lines (or axes), crossing at a point called the origin, to measure the horizontal (x) and vertical (y) locations, both positive and negative, thus effectively dividing the plane up into four quadrants.

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He was the Father of Philosophy.

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the reason its all x, y, z.a,b,c is beacsue of the french dude.' a, b and c for known quantities and x, y and z for unknown quantities

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Descartes' Rule of Signs

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this guy made the connection between geometry and algebra

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there are squares around the coordinate plane that added all together eqaul zero