SOLUTION: Find the equation of line passing through (1,2) (1,-2)

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Question 1087361: Find the equation of line passing through (1,2) (1,-2)
Found 3 solutions by josgarithmetic, MathLover1, MathTherapy:
Answer by josgarithmetic(39630) About Me  (Show Source):
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
the equation of line:
y=mx%2Bb where m is a slope and b is y-intercept
if passing through (1,2) and (1,-2), use these points to find m and b
first find m
Solved by pluggable solver: Finding the slope


Slope of the line through the points (1, 2) and (1, -2)



m+=+%28y%5B2%5D+-+y%5B1%5D%29%2F%28x%5B2%5D+-+x%5B1%5D%29


m+=+%28-2+-+2%29%2F%281+-+1%29


m+=+%28-4%29%2F%280%29


Since you CANNOT divide by 0, this means that the slope of the line is undefined.


Answer: The slope of the line is undefined.



since the slope of a vertical line is undefined, your line is a vertical line x=1



Answer by MathTherapy(10557) About Me  (Show Source):
You can put this solution on YOUR website!
Find the equation of line passing through (1,2) (1,-2)
As the x-coordinates repeat, or there're more than 1 y-values that're MAPPED to one (1) x-value,

the line has an UNDEFINED SLOPE, is vertical, is PARALLEL to the y-axis, and is therefore: highlight_green%28matrix%281%2C3%2C+x%2C+%22=%22%2C+1%29%29 

That's it!! Nothing COMPLEX and/or CONFUSING!