<p>ran into one of these on math lvl 2 practice test</p>
<p>what is it?</p>
<p>well it’s a function that’s defined in terms of something other than x.</p>
<p>Like you can have x(t) and y(t) and find a parametric equation from both of them.</p>
<p>This might help…
[SparkNotes:</a> SAT Subject Test: Math Level 2: Parametric Equations](<a href=“http://www.sparknotes.com/testprep/books/sat2/math2c/chapter8section8.rhtml]SparkNotes:”>http://www.sparknotes.com/testprep/books/sat2/math2c/chapter8section8.rhtml)</p>