Explain in your own words why the line x = 7 is a vertical line.

Answer by  trice23 (7)

I think that the reason x= 7 is a vertical line is because it is an even number and on the number line it is a positive number and if you go the other it turns in to negative numbers. That is when it is used on the number ine.

Answer by  Clement (1453)

The line given by the equation x = 7 is a vertical line since all the points on this line have the same x-value, namely 7. The y-values do, however, differ.

Answer by  DavidD (148)

This is a vertical line because the equation does not define any restrictions for y. As a result all y values are on the line as long as x=7.