notes 4.2 scatter plots and the coordinate plane a coordinate plane uses ordered pairs such as (4,2)...

Notes 4.2 Scatter Plots and the Coordinate Plane

A coordinate plane uses ordered pairs such as(4,2) to name points. The numbers are the coordinates of the points. A coordinate planehas two axes, the x-axis (horizontal) and they-axis (vertical). The first number of the ordered pair is the x-coordinate and the secondnumber is the y-coordinate. The origin islocated where the two axes cross. The axescross at (0,0).

A scatter plot is a collection of points in a coordinate plane that represents a relation-ship between two quantities.

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homework answershomework answers

9) (0,3) 10) (2,5) 9) (0,3) 10) (2,5) 11) (0,0) 11) (0,0)

12) (2,0) 13) (3,3) 12) (2,0) 13) (3,3) 14) (5,4) 14) (5,4)

Spiral ReviewSpiral Review

1) mpa: With each fold, the number of 1) mpa: With each fold, the number of regions doubles.regions doubles.

2) 5 3) 28 4) 14 5) 14 6) 2) 5 3) 28 4) 14 5) 14 6) 1414

7) 4 8) > 9) > 10) > 11) 7) 4 8) > 9) > 10) > 11) >>

12) P=3 mi. A=9/16 mi.12) P=3 mi. A=9/16 mi.22

13) P=17 4/5 ft. A=18 7/10 ft.13) P=17 4/5 ft. A=18 7/10 ft.22

14) P=8 yd. A=2 2/3 yd.14) P=8 yd. A=2 2/3 yd.22

Using TechnologyUsing Technology1)1) 9.2; yes; The area is the sum of the two 9.2; yes; The area is the sum of the two

widths.widths.2)2) 13.4; yes; The area is the sum of the two 13.4; yes; The area is the sum of the two

widths.widths.3)3) 24.2; yes; The area is the sum of the two 24.2; yes; The area is the sum of the two

widths.widths.4)4) 35.8; yes; The area is the sum of the two 35.8; yes; The area is the sum of the two

widths.widths.5)5) Yes, but frames whose outer width is Yes, but frames whose outer width is

other than one greater than its inner other than one greater than its inner width, the difference is the product of the width, the difference is the product of the frame width and the sum of the inner frame width and the sum of the inner and outer width.and outer width.