The vertex is at (0, 3) so y=a(x-0)²+3, which is y=ax²+3
next, use a given point to find a: 10=a(3)²+3, so 9a=7, a=7/9
the equation is then y=

as for the first question, the shape is an ellipse, the domain is -5≤x≤5, the range is -3≤y≤3
the equation can be written as :
Maybe the right two because they are more equal to each other making a better estimate.
I think that in the first one is b
9 - 10 + 3 =2
START FROM ADDITION
-10 +3= -7+9= 2
Ur mistake was the negative 10