Final answer:
The line that passes through the points (7, 10) and (7, 20) is vertical. It has an undefined slope because the x-coordinates are the same and the y-coordinates differ.
Step-by-step explanation:
The original question seems to have been asking about what is true regarding a line passes through two points (7, 10) and (7, 20). When a line passes through two points that have the same x-coordinates but different y-coordinates, it indicates that the line is vertical. A vertical line has an undefined slope, meaning you cannot compute a slope value since you would be dividing by zero. Therefore, if we were to look at the options provided in the question, none directly apply to the properties of this line. However, if the context of the question were about which statement is true, it seems that there may have been a missing true/false component related to the properties of the line described.