Question

WILL MEDAL!!
Find the equation of the axis of symmetry and the coordinates of the vertex of the graph of each function.
7. y=2x^2+3

9. f(x)=2x^2+4x-1

11. f(x)=3x^2-9x+2

13. f(x)=-5x^2+3x+2

15. f(x)=6x^2+6x-5

Answer 1

@Phebe

Answer 2

7. -2 x^2+y-3 = 0

Answer 3

9. f(x) = 2 x (x+2)-1

Answer 4

11. 3 (x-3) x+2 = f(x)

Answer 5

13. f(x) = (3-5 x) x+2

Answer 6

15. f(x) = 6 x (x+1)-5

Answer 7

There yah go!! :D

Answer 8

Thank you so much @Phebe !!!