Answer:
x=-0.63,y=-7.56
Step-by-step explanation:
if you know the general formula of the quadratic function
[tex]x = -\frac{ - b + - \sqrt{b^{2} - 4ac } }{2a} [/tex]
then you need to that the line of symmetry is equal to average of the sum of roots
which means
[tex] \frac{ - b}{2a} [/tex]
as the sum is equal to -b/a
you also need to the know the quadratic equation symbols
[tex] ax ^{2} + bx + c[/tex]
all you need now is to plug the values in this formula to get x coordinate then you subsitute x to get the y
