Coordinate Planes

• x-axis

• y-axis

• Coordinate Plane

• Quadrants

• Ordered Pairs

• Origin

The numbers you use can be placed on this line. The number 1 would go over the number 1 on the number line. Numbers less than 0 are called negative numbers.

The original number line still goes left and right, but the new number line goes up and down. Now we have a two dimensional representation. The two number lines combined are called a coordinate plane. We can not only put numbers on our number lines, but also to the left, right, up, and down of the number lines.

Quadrants are the 4 areas created when we combined the number lines. The top right is Quadrant 1 moving counterclockwise you will find Quadrant 2, 3 and 4. We also want to label the number lines. We call the original number line the X-axis and the other number line the Y-axis.

Since the X-axis represents the original number line, we will list that number first. The Y-axis number, will be listed second. We want to separate the two numbers with a comma and put parenthesis around them, so we know we are referencing numbers in our coordinate plane: (X,Y).

X represents the value from the center of the left and right number line and Y represents the value from the center of the up and down number line.
ORIGIN

The center where both number lines intersect is 0 and is called the origin. So we can represent the center of both number lines in our coordinate plane as (0,0), called the origin point.

Ordered pairs represent points on the coordinate plane.

They are also called (x,y) coordinates

we need to know the two numbers. We know the first number will represent our left and right value on the X-axis. We know our second number will represent the up and down value on the Y-axis. Our X-axis number is at 3 and our Y-axis number is at 4. They intersect at that dot seen in our picture, we would label that dot as (3,4).

Always write your ordered pairs in (x,y) order

​Coordinate Plane

• A mathematical tool used to graph points, lines, and other objects.

• It is also known as a two-dimensional plane formed by the intersection of the Y and X axis.

Origin

• The point where the number lines intersect. (0, 0)

Coordinate

• A point on the coordinate plane, expressed in ordered pair (x,y) form. All points can be traced to an X and Y location.

Quadrants

• Quadrant 1 located in the upper right of the plane, contains positive X and Y coordinates. Example: (2, 3)

• Quadrant 2 located in the upper left of the plane, contains a negative X and a positive Y coordinates. Example: (-2, 3)

• Quadrant 3 located in the lower left of the plane, contains negative X and Y coordinates. Example: (-2, -3)

• Quadrant 4 located in the lower right of the plane, contains a positive X and a negative Y coordinates. Example: (2, -3)

• Engineers

• Astronauts

• Pilots

• Construction Workers

• Graphic Designers

• Navigators

• Fisherman

Careers

Used to determine a specific location in a large area.

Example: Let's find our location on the global map.

https://www.gps-coordinates.net/my-location

Mapping