For every 12 foot of boat you have 1 cm on the model.
So the length of the model = 84 / 12 = 7 cms Answer
Remember that the slope of a line never changes, so you can choose whatever 2 points you want and you will always get the same slope. Calculate the rise and run (You can draw it on the graph if it helps). The slope is 2/4, which , of course, you can simplify to ½.
You cant put .25 into a mixed number
its 1/4
