The graph of the function fx = –x + 3x – 1 is shown below. Which statement about the function is true?The function is positive for all real values of x wherex < –1.The function is negative for all real values of x wherex < –3 and where x > 1.The function is positive for all real values of x wherex > 0.The function is negative for all real values of x wherex < –3 or x > –1.
Accepted Solution
A:
Answer:The function is negative for all real values of x where x < –3 and where x > 1.This quadratic function is downward parabola.It's root are -3 and 1.Quadratic is positive between -3 and 1.And negative on R-(-3,1).