How do you graph the function, label the vertex, axis of symmetry, and x-intercepts. #y=-x^2-3x+2#?
1 Answer
May 27, 2015
x of vertex: (-b/2a) = 3/-2 = -3/2
y of vertex: f(-3/2) = - 9/4 + 9/2 + 2 = 17/4
Vertex form: f(x) = -(x + 3/2)^2 + 17/4
X- intercepts: -x^2 - 3x + 2 = 0
D = d^2 = 9 + 8 = 17 ->
