# Chapter 5 - Linear Functions - 5-5 Standard Form - Practice and Problem-Solving Exercises: 26

Vertical

#### Work Step by Step

When x is set equal to a constant, this means that the line has no run to it. That means that the line is infinitely steep, for y (the rise) changes, but x (the run) does not change. This means that the line $x=-1.8$ is vertical.

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