Answer:
y = x²+8x+7
Step-by-step explanation:
according to the table, we get the point :
(-4, -9) as the vertex and (0, 7) as y-intercept
y = ax²+bx+c
=> the symetry axis :
x = -b/2a = -4
b=-4×2a = 8a
let a=1, => b = 8(1) = 8
y-intercept = (0, c) =(0, 7) => c =7
so, the equation might be :
y = x²+8x+7
