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09.28.10 ACT Opener,[object Object],1.					2. ,[object Object],3. 					,[object Object],4.  ,[object Object]
Introduction to coordinate geometry,[object Object],September 28, 2010,[object Object]
Coordinates,[object Object],Any point on the plane can be named with 2 numbers, called coordinates,[object Object],x- coordinate,[object Object],1st number,[object Object],the distance from the origin along the x-axis,[object Object],y – coordinate,[object Object],The 2nd number ,[object Object],the distance from the origin along the y-axis,[object Object],The pair is listed in alphabetical order,[object Object],(x, y),[object Object],(a, b),[object Object],Ordered Pair ,[object Object]
The Coordinate Grid,[object Object],y-axis,[object Object],First Quadrant,[object Object],Second Quadrant,[object Object],origin,[object Object],x-axis,[object Object],Third Quadrant,[object Object],Fourth Quadrant,[object Object]
Points in All Quadrants,[object Object],(+ , +),[object Object],(- , +),[object Object],(- , -),[object Object],(+ , -),[object Object]
Examples,[object Object],Plot each point on the coordinate grid,[object Object],(-3, 2),[object Object],(-1, -3) ,[object Object]
Examples,[object Object],Give the coordinates and the quadrant of each point.  ,[object Object],A,[object Object],B ,[object Object],A,[object Object],B,[object Object]
Graph Linear Equations with a Table,[object Object],Graph  y = 2x + 3,[object Object]
Be careful with your grpahing,[object Object],Be Neat!,[object Object],Use Labels,[object Object],Use a straight edge,[object Object]
Examples,[object Object],Graph 4x – 3y = 12,[object Object]
Exit Slip,[object Object],Complete a table of solutions for the equation.  ,[object Object],Graph the solutions and draw a line through them.  ,[object Object],y = 7x - 5,[object Object]

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Introduction to coordinate geometry

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