The question is: What fractions of the beads are blue or green ?
The answer is: <em>7/12 of the beads</em> are either blue or green.
<span><span> r = -1/3 = -0.333
</span><span> r = 0</span></span>
Divide actual km by scale km:
54/18 = 3
Multiply scale cm by that:
3 x 3 = 9
They are 9cm apart on the map
The solution is where the two lines meet. From the the graph, it looks like
(1, -1)
