Answer: B) increasing for x < -4/3 and x > 4/3
decreasing for -4/3 < x < 4/3
Explanation:
Graph the equation and follow the curve from left to right. If you are going up, it is increasing. If you are going down, it is decreasing.
Refer to the image below. Red is increasing. Blue is decreasing.
The vertices are at: x = -4/3 and x = 4/3