Question 1048459
y=3x^2 + 15x + 9
y=3(x^2 + 5x) + 9
y=3(x+ (5/2))^2 - 75/4 + 36/4
y = 3(x+ (5/2))^2 - 39/4
V(-2.5, - 9.75)
{{{drawing(300,300,  -10, 10, -10, 10,  grid(1),blue(line(-2.5,10,-2.5,-10)) ,
circle(-2.5,-9.75,0.4),

graph( 300, 300,  -10, 10, -10, 10,0, 3(x+ (5/2))^2 - 39/4))}}}