Question

Find the vertex: y=2x²-3 someone please tell me how to do this?

Answer 1

?

Answer 2

find vertex by 1st finding axis of symmetry (x = -b/2a). then plug in value of x into your equation to solve for f(-b/2a). those are your two points of your vertex

Answer 3

thanks

Answer 4

so what is your calculation of x , also know as the axis of symmetry

Answer 5

Vertex (0 , -3)
Axis of symmetry is: x = 0

See graph at this link:
http://www.wolframalpha.com/input/?i=+y%3D2x%C2%B2-3