x-coordinate
Definition of x-coordinate

• The First number in an Ordered Pair is the x-coordinate.
  The x-coordinate of a point tells how far to move left or right from the Origin along the x-axis.

Examples of x-coordinate

• In the Ordered Pair (2, 4), the x-coordinate is 2.
• In the Ordered Pair (- 1, 7), the x-coordinate is - 1.
• To reach the point (1, 3), move 1 unit to the left from the Origin and then 3 units up.

Solved Example on x-coordinate

Which of the points has - 4 as the x-coordinate?

Choices:
A. D
B. C
C. B
D. A
Correct answer:  D
Solution:
Step 1: The Ordered Pair for the point D is (- 2, 4). So, D has – 2 as the x-coordinate.
Step 2: The Ordered Pair for the point C is (2, 2). So, C has 2 as the x-coordinate.
Step 3: The Ordered Pair for the point B is (3, - 2). So, B has 3 as the x-coordinate.
Step 4: The Ordered Pair for the point A is (- 4, - 2). So, A has – 4 as the x-coordinate.
Step 5: So, the point A has – 4 as the x-coordinate.  

Related Terms for x-coordinate

• Coordinate Plane
• Ordered Pair
• x-axis
• Origin

Additional Links for x-coordinate

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