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1 of 8 0-day streak

Interpret connection sums and symmetry

Question 1 of 8

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Consider this network of civic buildings and the paths joining them. Each line is one path that can be used in both directions

Network. Vertices: [Depot | Clinic | Council]. Connections: Depot -- Clinic; Clinic -- Council.DepotClinicCouncil

Use this vertex order for both the rows and the columns of \(M\): Depot, Clinic, Council. Rows name the starting vertex and columns name the ending vertex

\[M = \begin{bmatrix} 0 & 1 & 0 \\ 1 & 0 & 1 \\ 0 & 1 & 0 \end{bmatrix}\]
(a)1 mark

Find the sum of the entries in the Depot column

(b)1 mark

What does this column sum count in the network?