Write an equation in point-slope form for the line through the given point with the given slope. the point 9, negative 1; m equals four thirds. a. y minus 0 equals four thirds times the quantity x plus 1 end of quantity. b. y minus 1 equals four thirds times the quantity x minus 9 end of quantity. c. y minus 1 equals four thirds times the quantity x plus 9 end of quantity. d. y plus 1 equals four thirds times the quantity x minus 9 end of quantity.