Question 1182614
<br>
Given a quadratic function y=ax^2+bx+c, the x coordinate of the vertex is -b/2a.<br>
{{{-9=-b/(2*17)}}}
{{{-b=-9(2*17)}}}
{{{b=306}}}<br>
The function value at the vertex is 6:<br>
{{{17(-9)^2+306(-9)+c=6}}}
{{{-1377+c=6}}}
{{{c=1383}}}<br>
ANSWERS:
b=306
c=1383<br>
A graph, showing the vertex at (-9,6)...<br>
{{{graph(400,400,-12,2,-5,15,17x^2+306x+1383)}}}<br>