Answer:
Step-by-step explanation:
y=x² +8x +7
first parabola opens up because variable a is positive
the axis of symmetry = =4 ( which is the case or have of the vertex)
v(h,K)
h=-b/2a = -8/2(1)=
h=-4
vertex(-4,-9)
focus(-4,-35/4)
diretrix : y = -37/4
