Question

What is the vertex of `y= x^2- 7x -3`?

Answer 1

Vertex`(7/2, -61/4)`

Explanation:

x-coordinate of vertex:
`x = -b/(2a) = 7/2`
y-coordinate of vertex:
`y(7/2) = 49/4 - 49/2 - 3 = -49/4 - 3 = -61/4`
Vertex `(7/2, -61/4)`
graph{x^2 - 7x - 3 [-40, 40, -20, 20]}