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1 of 8 0-day streak

Interpret connection sums and symmetry

Question 1 of 8

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The network shows people who communicate directly. Each line is one direct two-way communication link

Network. Vertices: [Maya | Liam | Noah]. Connections: Maya -- Liam; Liam -- Noah.MayaLiamNoah

Use this vertex order for both the rows and the columns of \(M\): Maya, Liam, Noah. 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 Liam column

(b)1 mark

What does this column sum count in the network?