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# Abscissa

## Definition of Abscissa

Abscissa is the value of the X-coordinate on a coordinate plane.

Abscissa is the value of the horizontal axis on a coordinate plane.

### Examples of Abscissa

- The ordered pair of point P is (1, 4)
- The abscissa of the point (2, 5) is 2
- The abscissa of the ordered pair (1, 4) is 1

### Video Examples: Abscissa

### Solved Example on Abscissa

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**Ques: **Identify the abscissa of the point D.

##### Choices:

- A. 4
- B. - 4
- C. 3
- D. 1

Correct Answer: A

#### Solution:

- Step 1: The abscissa is the value of the X-axis on the coordinate plane
- Step 2: The ordered pair of point D is (4, - 4)
- Step 3: So, the abscissa of point D is 4

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