Does the following parabola open upwards or downwards?
$f(x)=-\frac{8}{11}(x-4)^2-1$
AOpens upwards; has a U shape
BOpens downwards; has an upside down U shape
$f(x)=-\frac{8}{11}(x-4)^2-1$
AOpens upwards; has a U shape
BOpens downwards; has an upside down U shape