Find the equation of this line

Which expression gives you the distance between the points (5,1)and(9,-6)

Graph g(x)=2cosx . use 3.14 for π . use the sine tool to graph the function. graph the function by plotting two points. the first point must be on the midline and closest to the origin. the second point must be a maximum or minimum value on the graph closest to the first point.

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?