A point will take place in the fourth quadrant if the point has a positive abscissa and a negative quadrant.
Therefore, the graphing quadrants represent the values of the abscissa and quadrants. The coordinates are a pair of values the first value refers to the abscissa of a point and the second value refers to the ordinate of a point. Use of The coordinatesĬoordinates are the most important variables that represent a point of a graphical plane. The coordinates of a plane are the abscissa and the ordinate. These coordinates are used to represent a point on a two-dimensional graph chart. The graph chart represents some complex values of coordinate geometry in a simple way.
We will always be writing the ordered pairs with the x-coordinate first and the y-coordinate second.That has different implications such as defining the distance between two points. (The y-coordinate is somewhat like the north-south number.) The second coordinate, the y-coordinate, will refer to the number which corresponds with the point's vertical location as determined by the number on the y-axis. (The x-coordinate is somewhat like the east-west number.) The first coordinate, the x-coordinate, will refer to the number which corresponds with the point's horizontal location as determined by the number on the x-axis. A point labeled (0,-5) is drawn five units below the origin on the y-axis.įor every point in the plane, we will identify the location using an ordered pair of the form (x,y). A point labeled (-4,0) is drawn four units to the left of the origin on the x-axis. A point labeled (-3,4) is drawn three units left and four units up from the origin. A point labeled (4,2) is drawn four units to the right and two units up from the origin. The quadrants are labeled with quadrant I (Roman numeral one) being the upper right region, quadrant II (Roman numeral two) being the upper left region, quadrant III (Roman numeral three) being the lower left region, and quadrant IV (Roman numeral four) being the lower right region. On the y-axis, the tick marks above the origin are labeled 1 through 5 going up and -1 through -5 going down as they get farther from the origin. On the x-axis, the tick marks to the right of the origin are labeled 1 through 5 and the tick marks to the left of the origin are labeled -1 through -5 as they get farther from the origin. The axes have 5 tick marks in each direction. These lines cross at the point labeled as the origin. The line labeled as the y-axis is drawn vertically. Image Description: The line labeled as the x-axis is drawn horizontally. We will refer to this point of intersection as the origin and give it coordinates (0,0), since the number zero will be the reference number on each axis. We will intersect these axes at the point where zero is located on each of them (as shown below). 
The other will be drawn vertically and labeled as the y-axis.One axis will be drawn horizontally and labeled as the x-axis.To make things easier for us, we will be drawing the axes perpendicular to each other (at 90 angles).We will be identifying the location of a point in a plane (like a piece of paper or map) by first constructing two number lines called axes.
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