If you know how to do this, write an answer.

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

Acyclist bike x distance at 10 miles per hour .and returns over the same path at 8 miles per hour.what is the cyclist average rate for the round trip in miles per hour ?

The graph of f(x) = |x| is transformed to g(x) = |x + 11| - 7. on which interval is the function decreasing?