Use the following figure to answer the questions below.

a. Is the slope of Line A positive or negative? Line B?
b. Calculate the slope of Line A. Write the equation describing the line in the form Y = mX + b, where m is the slope of the line and b is a constant term.
c. Calculate the slope of Line B. Write the equation describing the line in the form Y = mX + b, where m is the slope of the line and b is a constant term.