For the quadratic function, tell whether the graph opens up or down and whether the graph is wider, narrower, or the same shape as the graph of $f(x)=x^{2}$.
-$f(x)=-5 x^{2}$
A) Down; wider
B) Up; narrower
C) Down; narrower
D) Up; wider

Question

Quizplus · Accepted Answer

The graph opens down because the coefficient of $x^2$ is negative (-5), and it is narrower than the graph of $f(x)=x^{2}$ because the absolute value of the coefficient is greater than 1.

For the Quadratic Function, Tell Whether the Graph Opens Up f(x)=x2f(x)=x^{2}f(x)=x2

For the Quadratic Function, Tell Whether the Graph Opens Up $f(x)=x^{2}$