What is the equation of the line
which passess through ($x1,$y1) and ($x2,$y2)?
y =
You have inverted the slope in the question. Slope is
(y2-y1)/(x2 - x1) you have the slope as (x2-x1)/(y2-y1).
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\item Numerical Response condition
The numericalhint tag takes four parameters: answer, name, unit and format. The ``name'' is the unique name given to the hint condition. The numerical answer for which you wish to provide conditional is included in the answer parameter. Student submission of that answer in combination with the ``unit'' parameter in the hint condition will trigger the hint action specified in the $<$hintpart$>$ tag.
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