Posted by **Sydney** on Thursday, September 9, 2010 at 1:35am.

why the line x = 4 is a vertical line.

Name three points on the line represented by x=4. Then explain why, when we connect these points, the line goes straight up and down and does not slant to the left or right.

Is the three point becasue on a graph we have -4 =4 on a graph twice and x + 4 a vertical line because x = 0

- Alegbra 116 Help Please -
**drwls**, Thursday, September 9, 2010 at 2:09am
Three (x,y) points on the x=4 line could be

(4,0), (4,1) and (4,8) . You could also add (4,any other number)

When you draw a line through these points, it goes straignt up and down, because the x value is always 4.

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