Image caption, STEP 3 - Draw a graph and label the x axis 1 to 4 and the y axis 1 to 9. A linear equation is represented as a line graph. In order to draw the line graph we require several pairs ...

Each linear equation can be drawn as a line on a graph. The co-ordinate where the ... In this example the adults are represented by y, and the children are represented by x. So y + 2x = 7 and ...

They remark that this has the flavour of Hamilton’s rule and, for bi-transitive graphs, we now see the connection. Equation (2) tells us that for interactions along all edges (for which d ij = e ...