Transcript The Coordinate Plane

Click the mouse button or press the
Space Bar to display the answers.
Objective
Graph points on a coordinate plane
Vocabulary
Coordinate plane
Two number lines that form right angles and
intersect at their zero points
Vocabulary
Coordinate grid
Two number lines that form right angles and
intersect at their zero points
(coordinate plane)
Vocabulary
x-axis
The horizontal number line
x-axis
Vocabulary
y-axis
The vertical number line
y-axis
Vocabulary
Origin
The point of intersection of the two number
lines
origin
Vocabulary
Ordered pair
Any point on the coordinate plane graphed
using two numbers (x, y)
(3, 2)
Vocabulary
x-coordinate
The first number in the ordered pair (abscissa)
(3, 2)
Vocabulary
y-coordinate
The second number in the ordered pair (ordinate)
(3, 2)
Vocabulary
Quadrant
The number lines separate the coordinate
plane into four sections
II
I
III
IV
Example 1 Name an Ordered Pair
Example 2 Graph an Ordered Pair
Example 3 Identify Quadrants
Example 4 Identify Quadrants
Name the ordered pair for point R graphed below.
Start at the origin.
R
Move left to find the
x-coordinate of point R,
which is –2.
Move up to find the
y-coordinate, which is 4.
Answer: R (–2, 4)
1/4
Name the ordered pair for point M graphed below.
Answer: M (3, –1)
1/4
Graph and label the point M (3, 5)
Use a coordinate plane graph
Write the point and coordinate
pair above the graph
Answer:
M (3, 5).
M (3, 5)
Begin at origin
Using your pencil point, move
3 units to the right (do not
draw a line)
Move 5 units up.
Draw a dot at the intersection
Label dot with letter and
coordinate pair
2/4
Graph and label the point G(–2, –4)
Answer:
2/4
GEOGRAPHY Use the map of Utah shown below. In
which quadrant is Vernal located?
Locate axis of coordinate plane
I
Determine quadrants
II
Locate Vernal
Identify quadrant where
Vernal is located
Answer: Quadrant I
IV
III
3/4
GEOGRAPHY Use the map of Utah shown below. In
which quadrant is Tremonton located?
Answer: Quadrant II
3/4
Name a city from the map of Utah shown below that is
located in quadrant IV.
Locate axis of coordinate plane
I
Determine quadrants
II
Locate city in quadrant IV
IV
Answer:
Bluff
III
4/4
*
Name a city from the map of Utah shown below that is
located in III.
Answer: Cedar City
4/4
Assignment
Lesson 3:3
Geometry: The
Coordinate Plane
9 - 30 All