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2

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René Descartes (1596-1650)

philosopher mathematician joined algebra

and geometry credited with Cartesian

plane

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4

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Formed by intersecting two real number lines at right angles

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End

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Horizontal axis isusually

called thex-axis

End

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Verticalaxis isusually

called they-axis

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End

x-y plane rectangular coordinate system

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Also called:

End

Divided intoFour Quadrants

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End

Divides intoFour Quadrants

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I

End

Divides intoFour Quadrants

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III

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Divides intoFour Quadrants

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III

III

End

Divides intoFour Quadrants

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III

III IV

End

The intersectionof the two axes

is called the origin

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End

Each point in thex-y plane is

associated with an ordered pair, (x,y)

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(x,y)

(x,y)

(x,y)

(x,y)

End

The x and y of the ordered

pair,(x,y), are called

its coordinates

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(x,y)

(x,y)

(x,y)

(x,y)

End

Math AlertThere is an

infinite amount of points in the Cartesian plane

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