(a) Find the slope of the line whose equation is 3x + 7y + 42 = 0. Find the x and y-intercepts of the line. Plot the line. (b) Find the equation of the line parallel to the line given in (a) and four...

(a) Find the slope of the line whose equation is 3x + 7y + 42 = 0. Find the x and y-intercepts of the line. Plot the line. (b) Find the equation of the line parallel to the line given in (a) and four units above it. Plot the line on the same set of axes.