Tony likes to collect colored string. draw a line plot to show the lengths of his string

For a line plot, you will start with just a basic number line.  Since you have fractions, you could divide up the numbers into 1/4, 1/2 and 3/4 between each whole number. 

Then, place a dot above each number for the numbers that you have. You will have 2 dots above 3 and 1/2.

Ithink if im not mistaking b is -3 but im not a 100% sude