2x-(6x-1) what is the answer to this equation

Need this asap if anyone can i would be very grateful. if you could show workings that would really

Determine the fraction of total interest owed. after the fourth month of a 12-month loan: the numerator is: {(n + ) + (n + ) + (n + ) + (n + )} = , and the denominator is: {(n) + (n + 1) + + (n + )} = . therefore, the fraction is numerator/denominator (to the nearest tenth) =

Find the slope and the y-intercept if there's one and the equation of the line given these two points( 3, 2) and( 3, -4)