What is the line of symmetry of the parabola y=x2+6x-9?

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asked Jun 19, 2019 232k views

1 Answer

MichaD · Answer 1 · 2019-06-23T12:14:39+0000

first we have to find the vertex (h,k) h is also x and it also is the a xis symmetry

1st: group the number
(X2+6x)-9

2nd: use b/2

6/2 = 3 , 3^2= 9

(X2+6x+9)-9-9

(X2 + 3)-18

Vertex is 3,-18 so the symmetry is 3

What is the line of symmetry of the parabola y=x2+6x-9?

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