Blue Day – 1/8/2014Gold Day – 1/9/2014

Porcupine Function WS

Cartesian PlaneDomain and Range4th Six weeks passesLast day to do a schedule change is

Friday, January 16, 2015.Student Holiday – Monday, January

19, 2015

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René Descartes (1596-1650)

philosopher mathematician joined algebra

and geometry credited with--- Cartesian

plane

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Formed by Intersecting two real number lines at right angles

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Horizontal axis isusually called the

x-axis

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Verticalaxis is

usually called the

y-axis

x-y plane rectangular coordinate system

Cartesian Plane is

also called:

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Divides intoFour

Quadrants

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Divides intoFour Quadrants

III

III IV

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The intersectionof the two

axes is called the

origin

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Math Alert The quadrants

do not include the axes.

So, a point on the x or y axis is not in a quadrant

III

III IV

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Each point in the

x-y plane is associated

with an ordered pair,

(x,y)

(x,y)

(x,y)

(x,y)

(x,y)

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The x and y of the ordered

pair,(x,y), are called

its coordinates

(x,y)

(x,y)

(x,y)

(x,y)

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Math AlertThere is an

infinite amount of

points in the Cartesian

plane

We always start graphing ordered pairs from the orgin.

If x is 0, the graph will be on the y-axis

If y is 0, the graph will be on the x-axis.