Question

rewrite in vertex form:y=-1/2x^2+4x-14

Answer 1

\[y=-\frac{1}{2}x^2+4x-14\]
\[y=-\frac{1}{2}(x^2-8x)-14\]
\[x=-\frac{1}{2}(x-4)^2+k\]to find \(k\) replace \(x\) by 4 in the original expression