Answer:
the vertex is ( 4,7)
Step-by-step explanation:
* Result: Equation y= a(x-m)^2 + n, then the vertex is (m,n).
Here, we have y =(x-4)^2 +7, then the vertex is ( 4,7).
Hope you understand.
Because it’s parallel to 4x+3=0, we know the gradient of the line is 4 so it will be something like 4x+c=y
then you sub in (9,5), so x=9