how can I determine if high/low/band-pass based on Zero-pole plot?

[marbak]

Hello, I have a question. How can you see if a system is a low-pass, high-pass or band-pass filter based on the zero-pole plot?
Doing some assignements to prepair for an exam, and got stuck on this one, clearly something I¨ve forgot.

From the answers I know it will turn out to be a low-pass, but not sure how to get there.

it's an IIR system with a numerator of -1 and denominators 1/3, 2 and 3.

 

[Pulkit Varshney]

try after putting frequency value zero and infinity and see the magnitude...

 

[marbak]

The task seemed to suggest reading directly of the plots from the zero-pole plot, without calculations or math operations of any kind. Is that not possible?