Write the equation of a line through (-1,7) and (2,-6)

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

Write an inequality and solve each problem. for exercises 11 and 12, interpret the solution.

Find the distance between the pair of points a(-1,8) and b(-8,4)