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# Always start at the origin to plot a point. - PowerPoint PPT Presentation

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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Presentation Transcript

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.

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

Y-axis

I

X-axis

IV

Y-axis

(+,+)

(-,+)

X-axis

(-,-)

(+,-)

(5,10)

X- coordinate

Y- coordinate

Y-axis

Origin

Point

(0,0)

X-axis

Y-axis

If the x-coordinate is positive move this way

If the x-coordinate is negative move this way

X-axis

Y-axis

If the y-coordinate is positive move this way

If the y-coordinate is negative move this way

X-axis

Y-axis

(1,3)

(-2,1)

X-axis

(-5,-1)

(4,0)

Y-axis

(4,4)

Next move on the Y-axis

X-axis

(-3,-1)

First move out on the

X-axis