Question 422232
  <pre><font face = "Tohoma" size = 4 color = "indigo"><b>
Hi
f(x)= -x^2 +4              Vertex (0,4) Green
f(x) = 2(x + 3)^2 +5       Vertex(-3,5) Blue
f(x)=  -1/2(x+4)^2 +6      Vertex (-4,6)Purple
{{{drawing(300,300,   -10,10,-10,10,  grid(1),
circle(-3, 5,0.4),
circle(0, 4,0.4),
circle(-4, 6,0.4),

graph( 300, 300, -10,10,-10,10,0,-x^2 +4,2(x + 3)^2 +5, 
-.5(x+4)^2 +6))}}}