Answer:
minimum value of 7
Step-by-step explanation:
It is open up so it has a minimum
The minimum value is the lowest y
So we first must find the x that the point happens at which is -b/(2a)
So -(-8)/(2*1)=8/2=4
Now to find the y use y=x^2-8x+23
y=4^2-8(4)+23
y=16-32+23
y=-16+23
y=7 (lowest y-minimum value is 7)
