aliera95 Group Title 1 one year ago one year ago

1. mathstudent55

This is a parabola that opens up. Multiply out the right side using FOIL. Then write it in the form: \(f(x) = ax^2 + bx + c \) Then \(x = -\dfrac{b}{2a} \) gives you the equation of the axis of symmetry. The vertex is on the axis of symmetry, so if you plug in \(-\dfrac{b}{2a} \) for x in the equation of the parabola, you'll get the y coordinate of the vertex.

2. aliera95

(-1,-9) ?

3. mathstudent55

I have no way of checking since you removed rthe problem.