1. The Coordinate Plane
By: Mr. Jay Mar Bolajo

2. Coordinate Plane
Definition
The plane formed when 2 perpendicular number lines intersect at their zero points

3. The perpendicular number lines form a grid on the plane
Coordinate Plane
The perpendicular number lines form a grid on the plane

5. X-axis The horizontal number line Positive to the right
Negative to the left

6. Y-axis
The vertical
number line
Positive upward
Negative downward

7. Where the x and y axes intersect at their zero points
Origin
Where the x and y axes intersect at their zero points

9. Quadrants
The x and y axes divide the coordinate plane into 4 parts called quadrants

10. II I IV
III

11. A pair of numbers (x , y) assigned to a point on the coordinate plane
Ordered Pair
A pair of numbers (x , y) assigned to a point on the coordinate plane

12. Ordered Pair
X-coordinate
(x , y)
Y-coordinate

13. y Quadrant 2 Quadrant 1 ( - , + ) ( + , + ) Origin -x x ( - , - )3
( - , + )
( + , + ) 2
Origin 1 -x x -3 -2 -1 1 2 3 -1 -2
( - , - )
( + , - ) -3
Quadrant 3
Quadrant 4 -y

14. Plotting a Point
Step 1:
Begin at the Origin

15. Plotting a Point
Step 2:
Locate x on the x-axis

16. Move up or down to the value of y
Plotting a Point
Step 3:
Move up or down to the value of y

17. Draw a dot and label the point
Plotting a Point
Step 4:
Draw a dot and label the point

18. In Your Own Words What is a coordinate plane? Define origin
How do you plot a point?