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Leni [432]
3 years ago
15

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

Mathematics
1 answer:
Rzqust [24]3 years ago
5 0
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
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