The shape of \( y=x^{2} \), but upside-down and vertically stretched by a factor of 5 .A. \( f(x)=5(x-5) x^{2} \)B. \( f(x)=-5 x^{2} \)C. \( f(x)=(x-5)^{2} \)D. \( f(x)=5 x^{2} \)
\( f(x)=-5x^{2} \)
Step 1 :\( f(x)=-5x^{2} \)