(1 + 5) + 9 = 15 another way to right this

How do the graphs of y = 1/x and y=5/x+6 compare?

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

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)