8th Grade Algebra 1-A

Chapter 2-2

The Coordinate Plane

Terms and Concepts (A)

The coordinate system: formed by the right angle intersection of two number lines. The lines intersect at coordinate 0. Look at example on top of page 58

Terms and Concepts (B)

Origin: the point located at (0, 0) on a coordinate plane.

Y-axis: the vertical number line (north, south)

X-axis: the horizontal number line (east, west)

Coordinate plane: the plane that contains the x and y axis

Terms and Concepts (C)

Ordered pair: used to locate any point on a coordinate plane. The first number gives the x-axis coordinate The second number gives the y-axis coordinate

Quadrant: four regions of the coordinate plane created by the x-axis and y-axis intersection. 1: (+,+) 2: (-,+) 3: (-,-) 4: (+,-)

Class assignment

Work the examples on pages 59-60 Problems 1-8

Work on page 56 Problems 4-33 (evens)

Homework Assignment

Do page 9 questions 1-30 (all) from the practice workbook.