Question

Please help!!!!
1. What are the vertex and the axis of symmetry of the equation?

y = –2x2 + 8x – 18 (1 point)
vertex: ( 2, –10)
axis of symmetry: x = 2
vertex: (2, –10)
axis of symmetry: x = –10
vertex: (–2, –10)
axis of symmetry: x = –2
vertex: (–2, 10)
axis of symmetry: y = –2
4. What is the vertex form of the equation?

y = x2 + 4x – 3 (1 point)
y = (x – 2)2 – 7
y = (x + 2)2 – 7
y = (x – 2)2 + 7
y = (x + 2)2 + 7

Answer 1

1. The vertex of a parabola is -b/2a. The axis of symmetry is at the x-coordinate of the vertex.

4. You want to do completing the square.

x^2+4x-3
x^2+4x+4-4-3
(x+2)^2-7