Question

Which equation represents the vertical line passing through (1,-9)?

A. x = -9

B. x = 1

C. y = -9

D. y = 1

You can choose the correct equation that represents the vertical line passing through the given point.

Answer 1

The equation that represents the vertical line passing through the point (1, -9) is x = 1.

Step-by-step explanation:

A vertical line has an undefined slope and goes straight up and down. This means that the x-coordinate never changes, which is why the equation is just x = 1. The y-coordinate can be any value, but the x-coordinate must always be 1. So, the correct equation is x = 1.