coordinate graph1
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Introduction to Introduction to Coordinate GraphsCoordinate Graphs
DefinitionGrid/Graph – a set of uniformly – a set of uniformly
spaced horizontal and vertical line spaced horizontal and vertical line segments.segments.
DefinitionCoordinate Grid – a grid used to – a grid used to
locate a point by its distances from locate a point by its distances from 2 intersecting straight lines.2 intersecting straight lines.
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Definition x-axis: a a
horizontal horizontal number line on a number line on a coordinate grid; coordinate grid; represents the represents the dependentdependent variable.variable. x
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DefinitionDefinitiony-axisy-axis: a vertical number line on a : a vertical number line on a
coordinate grid; represents the coordinate grid; represents the independentindependent variable. variable.
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y
DefinitionDefinitionCoordinates:Coordinates: an ordered pair, used an ordered pair, used
to identify a location on a coordinate to identify a location on a coordinate plane.plane.
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(3,4)
How to Plot Ordered PairsHow to Plot Ordered Pairs Step 1Step 1: Always find the x value first, : Always find the x value first,
moving horizontally along the x-axis.moving horizontally along the x-axis.
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(2,3)
y
x
How to Plot Ordered PairsHow to Plot Ordered Pairs Step 2Step 2: Starting from your new : Starting from your new
position find the y value by position find the y value by moving vertically up.moving vertically up.
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(2,3)y
x
How to Find Ordered PairsHow to Find Ordered Pairs
Step 1Step 1: Find how far over horizontally : Find how far over horizontally the point is by counting along the x-the point is by counting along the x-axis.axis.
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y
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How to Find Ordered PairsHow to Find Ordered PairsStep 2Step 2: Now count how far vertically the : Now count how far vertically the
point is by counting up.point is by counting up.
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y
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(5,4)
RememberRememberThe first number is always the The first number is always the x-x-
coordinatecoordinate. The second number is . The second number is always the always the y-coordinatey-coordinate..
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What is the ordered pair?What is the ordered pair?
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What is the ordered pair?What is the ordered pair?
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What is the ordered pair?What is the ordered pair?
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What is the ordered pair?What is the ordered pair?
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Plot the ordered pair!Plot the ordered pair!
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(3,4)(3,4)
Plot the ordered pair!Plot the ordered pair!
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(4,6)(4,6)
Plot the ordered pair!Plot the ordered pair!
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(3,2)(3,2)
CreditsCreditsClipart from “Microsoft Clip Gallery” located on the Internet at http://cgl.microsoft.com/clipgallerylive/default.asp
Math dictionary. (2006). Honesdale, PA: 2006.