Example
Describe the point shown as an ordered pair.
Answer:
Begin at the origin and move along the x-axis. This is the x-coordinate and is written first in the ordered pair.
(5,<i>y</i>)
Move from 5 up to the ordered pair and read the number on the
y-axis. This is the
y-coordinate and is written second in the ordered pair.
(5,2)
Answer
The point shown as an ordered pair is
(5,2).
example
Name the ordered pair of each point shown:

Solution
Point A is above
−3 on the
x-axis, so the
x-coordinate of the point is
−3. The point is to the left of
3 on the
y-axis, so the
y-coordinate of the point is
3. The coordinates of the point are
(−3,3).
Point B is below
−1 on the
x-axis, so the
x-coordinate of the point is
−1. The point is to the left of
−3 on the
y-axis, so the
y-coordinate of the point is
−3. The coordinates of the point are
(−1,−3).
Point C is above
2 on the
x-axis, so the
x-coordinate of the point is
2. The point is to the right of
4 on the
y-axis, so the
y-coordinate of the point is
4. The coordinates of the point are
(2,4).
Point D is below
4 on the
x−axis, so the
x-coordinate of the point is
4. The point is to the right of
−4 on the
y-axis, so the
y-coordinate of the point is
−4. The coordinates of the point are
(4,−4).
example
Name the ordered pair of each point shown:
Answer:
Solution
Point A is on the x-axis at x=−4 |
The coordinates of point A are (−4,0) |
Point B is on the y-axis at y=−2 |
The coordinates of point B are (0,−2) |
Point C is on the x-axis at x=3 |
The coordinates of point C are (3,0) |
Point D is on the y-axis at y=1 |
The coordinates of point D are (0,1) |
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