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Question 198023:  Please help me I need your help with this problem.
 
The following two points define a line:  (3, 7) and (x, 9).  Explain which value of x will give you a vertical line and write the equation of that vertical line. 
 
 Answer by Alan3354(69443)      (Show Source): 
You can  put this solution on YOUR website! The following two points define a line: (3, 7) and (x, 9). Explain which value of x will give you a vertical line and write the equation of that vertical line. 
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"Vertical" lines are parallel to the y-axis. The value of x is the distance from the y-axis, so for all values of y, x is constant. 
x = 3 
x = 3 is the equation of the line thru those 2 points. 
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