Can someone please eolve these questions its urgent

In the figure shown below, m < 40 and ab =8. which equation could be used to find x?

Write an equation in slope intercept form of the line passes through the given point and is parallel to the graph of the given equation (0,0); y=3/8 x+2

These tables represent a quadratic function with a vertex at (0, -1). what is the average rate of change for the interval from x = 9 to x = 10?