Question

Plot the ordered pairs in a coordinate plane. (GRAPH CANNOT COPY) $$A(-2,-3), B(-3,-2)$$

Short answer

The ordered pairs A(-2, -3) and B(-3,-2) have been plotted on the coordinate plane.

Step-by-step solution

Identify the Ordered Pairs

The ordered pairs given are A(-2,-3) and B(-3,-2). An ordered pair includes the x (horizontal) coordinate followed by the y (vertical) coordinate.

Plot the Ordered Pair A(-2,-3)

To plot the point A(-2,-3), start at the origin (0,0). Move 2 units to the left since x-coordinate is -2. Then move 3 units down as the y-coordinate is -3. Mark this point as A.

Plot the Ordered Pair B(-3,-2)

To plot the point B(-3,-2), start at the origin. Move 3 units to the left for the x-coordinate of -3 and move 2 units down for y-coordinate of -2. Mark this point as B.

Key concepts

Coordinate Plane

The coordinate plane is a two-dimensional surface on which we can plot points, lines, and curves using pairs of numbers known as coordinates. It is divided into four quadrants by a horizontal line called the x-axis and a vertical line called the y-axis. These axes intersect at a point called the origin, which has coordinates (0, 0).

To better understand the coordinate plane, imagine it as a map of a city where every location can be described by two numbers: how far to the east or west (left or right) and how far to the north or south (up or down) you must travel from the center of town, the origin. This grid of vertical and horizontal lines facilitates the precise placement of points and is essential for graphing mathematical functions, shapes, or any other set of points.

Ordered Pair

An ordered pair consists of two elements: the first one corresponds to the x-coordinate (horizontal placement), and the second one relates to the y-coordinate (vertical placement). They are written in the form \( (x, y) \). It is called an 'ordered' pair because the order of the numbers is crucial; if reversed, they would represent a different point on the coordinate plane.

For instance, the ordered pair \( (-2, -3)\) indicates a point that is 2 units to the left (negative direction) of the origin on the x-axis, and 3 units down (also in the negative direction) from the origin on the y-axis. It's important to remember that the x-coordinate dictates the left-right position and the y-coordinate dictates the up-down position on the plane.

Graphing Coordinates

Graphing coordinates is the process of plotting points on the coordinate plane using ordered pairs. To successfully graph a point, you should:

• Start at the origin, which is the center of the plane where the x-axis and y-axis intersect.
• Move horizontally to the right if the x-coordinate is positive or to the left if it's negative, according to the first number in the ordered pair.
• After reaching the correct horizontal position, move vertically up if the y-coordinate is positive, or down if it's negative, as indicated by the second number in the pair.
• Mark the spot where you end up. That's the location of your point. Label it accordingly if required.

For example, to plot the point A(-2, -3), begin at the origin. Because the x-coordinate is negative, move 2 spaces to the left. Then, as the y-coordinate is negative too, move 3 spaces down. Place a dot on the plane and label it as point A. Repeat these steps for every point you need to graph. Consistent practice in graphing coordinates will increase your speed and accuracy, making visualizing mathematical concepts much more intuitive.