# horizontal axis

**Definition of Horizontal Axis**

- Horizontal means flat or level.

Horizontal axis is the *x*-axis on a graph.

- The blue number line in the figure below is the
*x*-axis, the horizontal axis.

### Solved Example on Horizontal Axis

Point B is 5 units to the left of point A on the horizontal axis. Find the coordinates of B if A is at (8, 7).

**Choices:**

A. (3, 7)

B. (13, 7)

C. (7, 8)

D. (8, 12)

**Correct Answer: A**

**Solution:**

**Step 1: **(8, 7) 8 on the *x*-axis and 7 on the *y*-axis.

**Step 2:** Point B is 5 units to the left of point A on the horizontal axis, i.e. *x*-axis.

**Step 3:** So, the *x*-coordinate of B is 8 – 5 = 3

**Step 4:** The coordinates of point B is (3, 7).

**Related Terms for Horizontal Axis **