Straight lines follow the equation , y = a x + b

Let us find Ana equation,

From the graph, we have ( x=2, y=2) and (x=4, y=3)

By replacing the values in the general equation , we obtain the system of two equations:

2 = a x 2 + b

3 = a x 4 + b

Solving the system , we obtain Ana equation: Y = 0,5 X + 1

The same logic applies to the other two equations, yielding:

Davon equation : Y = -2 X + 4

Esme equation : Y = 3 X - 1