Fill in the blank with one of the words or phrases listed below. $$\begin{array} { l l l l }
\text { quadratic formula } & \text { quadratic } & \text { discriminant } & \pm \sqrt { b } \
\text { completing the square } & \text { quadratic inequality } & ( h , k ) & ( 0 , k ) \
( h , 0 ) & \frac { - b } { 2 a } & &
\end{array}$$
-The graph of $f ( x ) = a x ^ { 2 } + b x + c$ where $a$ is not 0 is a parabola whose vertex has $x$-value of________
A) $\pm \sqrt { b }$
B) $( h , 0 )$
C) $\frac { - b } { 2 a }$
D) $( 0 , \mathrm { k } )$

Question

Fill in the blank with one of the words or phrases listed below. $$\begin{array} { l l l l } 
\text { quadratic formula } & \text { quadratic } & \text { discriminant } & \pm \sqrt { b } \
\text { completing the square } & \text { quadratic inequality } & ( h , k ) & ( 0 , k ) \
( h , 0 ) & \frac { - b } { 2 a } & &
\end{array}$$
-The graph of $f ( x ) = a x ^ { 2 } + b x + c$ where $a$ is not 0 is a parabola whose vertex has $x$-value of________
A) $\pm \sqrt { b }$
B) $( h , 0 )$
C) $\frac { - b } { 2 a }$
D) $( 0 , \mathrm { k } )$

Quizplus · Accepted Answer

The vertex of a parabola described by the equation $f(x) = ax^2 + bx + c$ has an $x$-value of $\frac{-b}{2a}$, which is derived from the formula for finding the vertex of a quadratic function.

Fill in the Blank with One of the Words or Phrases