## anonymous one year ago What is the vertex of the graph of y = 3x^2 + 2x + 1?

1. Nnesha

formula to find x-coordinate of vertex $\huge\rm x= \frac{ -b }{ 2a }$

2. anonymous

You're reading my mind @Nnesha ! :D

3. Nnesha

then substitute x by x-coordinate to find y

4. anonymous

$$\bf \textit{vertex of a parabola}\\ \quad \\ y = {\color{red}{ 3}}x^2{\color{blue}{ +2}}x{\color{green}{ +1}}\qquad \left(-\cfrac{{\color{blue}{ b}}}{2{\color{red}{ a}}}\quad ,\quad {\color{green}{ c}}-\cfrac{{\color{blue}{ b}}^2}{4{\color{red}{ a}}}\right)$$

5. Nnesha

o^_^o

6. anonymous

what?