Write the Word or Phrase That Best Completes Each Statement $\frac { 1 } { 2 x ^ { 2 } }$

Short Answer

Write the word or phrase that best completes each statement or answers the question.
-y = - $\frac { 1 } { 2 x ^ { 2 } }$ Enter your answer exactly in the form: a $x ^ { b }$ where a,b are fractions or integers. No parentheses. If a power or coefficient is "1" then leave it off.