The document introduces concepts related to the coordinate plane, including the x-axis, y-axis, origin, quadrants, ordered pairs, and graphing points. It explains that the x-axis is horizontal, the y-axis is vertical, and the origin is at the center point (0,0). Points can fall into four quadrants depending on whether their x and y values are positive or negative. An example point (-5,3) is shown to lie in Quadrant II. The coordinates of two points A and B are given as (-5,-7) and (7,-2).

1. Module 4 Topic 1 The Coordinate Plane (Part 1) Midpoint Formula Relations & Functions

2. Vocabulary x-axis y-axis Origin Quadrants I, II, III, IV Ordered Pair Rene’ Descartes 1596-1650 “ I think; therefore I am.”

3. The x-axis is the Horizontal Axis. The y-axis is the Vertical Axis.

4. The Origin is the Center of the Coordinate Plane . Its Ordered Pair is (0, 0).

5. Notice how a Coordinate Plane is made up of 4 squares? These sections of squares are called Quadrants . They are numbered: I, II, III, IV

6. Quadrant I (+,+) Quadrant II (-,+) Quadrant III (-,-) Quadrant IV (+,+) Question: What Quadrant does (-5, 3) lie? Answer: Quadrant II

7. Graphing Ordered Pairs What are the coordinates of Point B? What are the coordinates of Point A? (-5, -7) (7, -2)

8. Click on the below link to practice these concepts. The Coordinate Plane Game

9. Now that you have the concept of The Coordinate Plane Go to the next Power Point presentation to begin instructional notes on The Midpoint Formula