Download Coordinate Plane

Coordinate Plane
The GED Mathematics Test includes two types
of non-multiple choice questions. When you
need to find a number answer, you’ll record
the answer in a standard grid. (see video)
The other type of grid is the coordinate plane
grid. There will be two coordinate plane grids,
one on each part of the GED Mathematics
Test.
The center row is the x-axis. It runs horizontally
through the grid. The center column is the y
axis. It runs vertically through the grid.
X-Axis
The numbers to the right of 0 on the x-axis are positive. The
numbers to the left of 0 on the x-axis are negative.
Y-Axis
The numbers above 0 on the y-axis are positive. The numbers
below 0 on the y-axis are negative.
An ordered pair gives the location
of a point on a coordinate plane.
* The first number of an ordered pair is the x-coordinate,
which provides the location of the point in relation to the xaxis.
* The second number of an ordered pair is the
y-coordinate, which provides the location of the point in
relation to the y-axis.
• An example of an ordered pair is (–3,–2). To
locate the point on the coordinate plane grid, first
move horizontally along the x-axis to –3; then
move down to –2 on the y-axis.
• An example of an ordered pair is (–3,–2). To
locate the point on the coordinate plane grid, first
move horizontally along the x-axis to –3; then
move down to –2 on the y-axis.
Coordinate Plane
1. Read the question carefully to determine
what is being asked.
2. The first number of an ordered pair is the xcoordinate. Find the x-coordinate on the xaxis.
3. The second number of an ordered pair is the
y-coordinate. (Just like in the alphabet, x
comes before y.) Locate the y coordinate.
Count up for a positive y coordinate or down
for a negative y coordinate.
4. Fill in the corresponding bubble (only one!).
Find (1, 4)
Find (1, 4)
Find (-1, -4)
Find (-1, -4)
Find (4, -3)
Find (4, -3)
Find (-3, 4).
Find (-3, 4).
A rectangle is drawn on a coordinate plane so that three vertices are
located at these coordinates:
(-5, 2),(5, 2), and (-5, -3).
• What are the
coordinates of the
fourth vertex of the
rectangle?
A rectangle is drawn on a coordinate plane so that three
are located at these coordinates:
(-5, 2),(5, 2), and (-5, -3).
• What are the
coordinates of the
fourth vertex of the
rectangle?
• Answer (5, -3)
vertices
• Watch the video on Alternate Format Grids
• Try the practice problems on pgs. 147 – 150,
and check your answers online
• Do the problems on GED Practice Packet page
26 and enter your answers using the answer
sheet on Blackboard