The Coordinate Plane
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The Coordinate Plane By: Stan Blackman Jay High School Lesson for Glencoe Algebra I Math Section 4-1 . Algebra I Glencoe Mathematics 2004 The McGraw Hill Companies Inc. Vocabulary Words Axes - two perpendicular number lines used for locating points

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The Coordinate Plane

By: Stan Blackman

Jay High School

Lesson for Glencoe Algebra I Math

Section 4-1

Algebra I Glencoe Mathematics 2004

The McGraw Hill Companies Inc.


Vocabulary Words

Axes - two perpendicular number lines used for locating points

Origin – the intersection of the two axes

Y-axis – the vertical number line

X-axis – the hoizontal number line


The four quadrants of the coordinate plane.

Y-axis

Quadrant

I

Quadrant II

X-axis

Quadrant

IV

Quadrant III


Signs of the quadrants.

Y-axis

(+,+)

(-,+)

X-axis

(-,-)

(+,-)


The Ordered Pair

(5,10)

X- coordinate

Y- coordinate


The Origin Point

Y-axis

Origin

Point

(0,0)

X-axis



Direction of Movement for the X-Coordinate

Y-axis

If the x-coordinate is positive move this way

If the x-coordinate is negative move this way

X-axis


Direction of movement for the Y-coordinate

Y-axis

If the y-coordinate is positive move this way

If the y-coordinate is negative move this way

X-axis


Name the given point.

Y-axis

(1,3)

(-2,1)

X-axis

(-5,-1)

(4,0)


How To Plot a Point on the Coordinate Plane

Y-axis

(4,4)

Next move on the Y-axis

X-axis

(-3,-1)

First move out on the

X-axis


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