Who ever anwser my question fast and is quick i will give any body 200 point i will any one

Given right triangle xyz, which correctly describes the locations of the sides in relation to

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2

The length of an intercepted arc of a central angle of a circle is 4 cm. if the radius of the circle is 5 cm what is the measurement of the central angle to the nearest whole degree