ALG 2!!!
posted by tyneisha .
Write an equation of a line with an undefined slope and passing through the point (2,4).
Hint: To answer this question, consider the type of line that has an undefined slope. Then write an equation of that line using the values in the ordered pair.

(y  4) = m (x + 2)
m is the undefined slope. 
on the other hand, maybe the slope is in fact undefined, meaning the line is vertical.
In that case, the line is
x = 2 
Steve has interpreted the problem differently, as if the line had infinite slope. I wrote an equation for all lines through the point, with an arbitrary slope m.
The problem statement is ambiguous in my opinion.