Low tide is 1 foot below the average water level. high tide is 5 feet higher than low tide. write an integer that represents the average water level relative to high tide.

The answer to the difference is 4 so just write it into an integer so 
1:4 

Where the white dots are is where your points should be plotted.a translation is simply just moving something from one place to another. in this case, you would move each plot point of the original shape 2 units up, and 5 units to the left.