The x-coordinate represents the horizontal shift, starting from the origin, and the y-coordinate represents the vertical shift.
Label: B Quadrant: II
Practice makes perfect
An ( x, y) ordered pair is plotted on a coordinate plane by finding the x-coordinate on the horizontal axis and the y-coordinate on the vertical axis. Let's take a look at the point we want to graph and label on a coordinate plane.
( -2, 2 12)
To graph this point we should first move 2 units in the negative horizontal direction starting from the origin. We move in the negative direction because the coordinate is a negative number. Then we should move 2 12 units in the positive vertical direction.
The point (- 2,2 12) matches with the label B. To determine the quadrant in which a point lies without graphing, observe the signs of the x- and y-coordinates.
Quadrant
x-coordinate
y-coordinate
Quadrant I
Positive
Positive
Quadrant II
Negative
Positive
Quadrant III
Negative
Negative
Quadrant IV
Positive
Negative
Since the x-coordinate of the given point is negative and the y-coordinate is positive, B(-2,2 12) lies in Quadrant II.
Extra
Visualizing Quadrants
To help us visualize each of the different quadrants, let's take a look at the diagram.
Therefore, we are able to determine in which quadrant a point is located only by looking at the signs of coordinates of this point.
