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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 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 the slope of the line and b is a constant term.