More help, this is for a test and i can not fail

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

Solve the equation below: (x+4)/6x=1/x a. x=2 b. x=0,2 c. x=-2 d. x=0,-2

Question 13 (1 point) jerome is starting a new job. his contract states he will earn $42,000 the first year, and will get a 4% raise per year. which function s(x) represents jerome's salary after a certain number of years, x?