Exercise 1.7.1
\[\begin{eqnarray*} y&=&4-(-x)^2\\ y&=&4-x^2 \end{eqnarray*}\]
Since the equation is the same as the original, the graph is symmetric with respect to the \(y\)-axis.
\[\begin{eqnarray*} y&=&4-(-x)^2\\ y&=&4-x^2 \end{eqnarray*}\]
Since the equation is the same as the original, the graph is symmetric with respect to the \(y\)-axis.