Find the rate of change of the function f(x)=-4/5x+8

Which point on the x-axis lies on the line that passes through point c and is parallel to lino ab?

Answer pls man im trying to get out of summer school

Percy rides his bike 11.2 miles in 1.4 hours at a constant rate. write an equation to represent the proportional relationship between the number of hours percy rides, x,and the distance in miles, y, that he travels.