Ryan B. answered • 02/11/22

10+ years tutoring Algebra 1

The equation for a __horizontal line__ looks like this: **y = c**

Here, **c** is just some number.

For example, **y = 4** is a horizontal line. All of the points on this horizontal like have a *y-coordinate* of **4**.

For example, the points **(0, 4)**, **(-1, 4)**, **(173892, 4)**, and **(-1/2, 4)** all lie somewhere on the horizontal line **y = 4**.

Given the point **(-7, -3)**, whose* y-coordinate* is **-3**, the horizontal line going through this point is **y = -3**.

The* x-coordinate* **-7** is actually irrelevant in this problem.

I hope this makes sense!