Date________________
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Guided Notes
Name____________________________
Section 4.1 Day 1 – Plot Points in a Coordinate Plane
Quadrants = The four regions into which the coordinate plane is divided by the x-axis and the y-axis, i.e. Quadrant I, II, III, and IV.
They are labeled as follows:
II
III
I
IV
**The point in the middle is called the ____________________, and is at (0, 0). The x-axis has positive values to the right and negative values to the left. The y-axis has positive values up and negative values down.
Example #1: For the following, give the coordinates for the points and which Quadrant the point is in. Remember that the coordinates for a point is written as (x, y).
2.) B ( , ) 3.) C ( , ) 1.) A ( , )
4.) D ( , ) 5.) E ( , ) 6.) F ( , )
B

 E
 F
 A
 C
 D

What happens if a point lies on either the x-axis or the y-axis, such as the point (4,0) or
(0,4)? Then these points are said to lie on the x-axis or y-axis and are not given a designated Quadrant.
What about the point (0,0) which is right in the middle of all four quadrants? ___________
Example #2: Plot the point in a coordinate plane. Describe the location of the point, i.e.
Begin at the origin. First move to the left 2 units and then down three.
1.) A (-4, 4)
2.) B (3, -2)
3.) C (-2, 5)
4.) D (0, 3)
5.) E (-6, 0)
Guided Practice
Plot the following points in a coordinate plane. Describe which quadrant they are in.
1.) A (2, 5) Q:______ 2.) B (-1, 0) Q:_______ 3.) C (-2, -1) Q:_______
4.) D ( -5, 3) Q: _______