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Coordinate Geometry by Monica Yuskaitis. Copyright © 2000 by Monica Yuskaitis Definition Grid – A pattern of horizontal and vertical lines, usually forming.

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Presentation on theme: "Coordinate Geometry by Monica Yuskaitis. Copyright © 2000 by Monica Yuskaitis Definition Grid – A pattern of horizontal and vertical lines, usually forming."— Presentation transcript:

1 Coordinate Geometry by Monica Yuskaitis

2 Copyright © 2000 by Monica Yuskaitis Definition Grid – A pattern of horizontal and vertical lines, usually forming squares.

3 Copyright © 2000 by Monica YuskaitisDefinition Coordinate grid – a grid used to locate a point by its distances from 2 intersecting straight lines. A B C D E 12345 What are the coordinates for the house?

4 Copyright © 2000 by Monica YuskaitisDefinition x axis – a horizontal number line on a coordinate grid. 1234506 x

5 Copyright © 2000 by Monica YuskaitisHint x is the shortest and likes to lie down horizontally. 1234506 x

6 Copyright © 2000 by Monica YuskaitisDefinition y axis – a vertical number line on a coordinate grid. 1 2 3 4 5 0 6 y

7 Copyright © 2000 by Monica YuskaitisHint y is the tallest and stands upright or vertically. 1 2 3 4 5 0 6 y

8 Copyright © 2000 by Monica YuskaitisDefinition Coordinates – an ordered pair of numbers that give the location of a point on a grid. (3, 4) 1 2 3 4 5 0 6 1234506 (3,4)

9 Copyright © 2000 by Monica YuskaitisHint The first number is always the x or first letter in the alphabet. The second number is always the y the second letter in the alphabet. 1 3 2 4 5 0 6 1234506 (3,4)

10 Copyright © 2000 by Monica Yuskaitis How to Plot Ordered Pairs Step 1 – Always find the x value first, moving horizontally either right (positive) or left (negative). 1 3 2 4 5 0 6 1234506 (2, 3) y x

11 Copyright © 2000 by Monica Yuskaitis How to Plot Ordered Pairs Step 2 – Starting from your new position find the y value by moving vertically either up (positive) or down (negative). 1 3 2 4 5 0 6 1234506 (2, 3) y x

12 Copyright © 2000 by Monica Yuskaitis How to Find Ordered Pairs Step 1 – Find how far over horizontally the point is by counting to the right (positive) or the left (negative). 1 3 2 4 5 0 6 1234506 (5, ) y x

13 Copyright © 2000 by Monica Yuskaitis How to Find Ordered Pairs Step 2 – Now count how far vertically the point is by counting up (positive) or down (negative). 1 3 2 4 5 0 6 1234506 (5,4) y x

14 Copyright © 2000 by Monica Yuskaitis What is the ordered pair? 1 3 2 4 5 0 6 1234506 (3,5) y x

15 Copyright © 2000 by Monica Yuskaitis What is the ordered pair? 1 3 2 4 5 0 6 1234506 (2,6) y x

16 Copyright © 2000 by Monica Yuskaitis What is the ordered pair? 1 3 2 4 5 0 6 1234506 (4,0) y x

17 Copyright © 2000 by Monica Yuskaitis What is the ordered pair? 1 3 2 4 5 0 6 1234506 (0,5) y x

18 Copyright © 2000 by Monica Yuskaitis What is the ordered pair? 1 3 2 4 5 0 6 1234506 (1,1) y x

19 Copyright © 2000 by Monica Yuskaitis Credits Clipart from Microsoft Clip Gallery located on the Internet at http://cgl.microsoft.com/http://cgl.microsoft.com/ clipgallerylive/default.asp


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