If we have the equation y=ax^2+bx+c, how can we can find the x-coordinate of the vertex?

Find the Vertex: f(x) = x^2 + 10x + 21

If given the equation y = 3(x + 5)^2 - 4, what is the vertex of the parabola?

Find the Vertex: y = x^2 + 6x + 2

Find the Vertex: h(x) = -3x^2 + 12x + 2

Given the equation for this parabola: y=(x-4)^2-3, does this parabola have a maximum or minimum value?

A parabola has a vertex at (-3,2). Where is the axis of symmetry?

When a basketball is shot, it forms an arc (also known as a parabola). When the basketball reaches it's highest point, what is that point called?

Standard form of a quadratic equation

Without using a graphing calculator: What direction is the following equation opening? y=-3x^2-7x+8