Communication True or False: [6 Marks] 7. The points of inflection are found by solving the first derivative equal to zero. 8. When the denominator of a rational function is zero the function will always have a vertical asymptote. 9. To determine the behavior of a function near the vertical asymptotes we use left and right hand limits. 10. Determining if a local extrema is a maximum or minimum cannot be done using the second derivative test. 1 1. A function can never cross asymptotes. 12. To determine the end behavior of a function we must check the lim x -10