Identify Zeros and Use Them to Graph Polynomial Functions

Check For Understanding – Identify Zeros and Use Them to Graph Polynomial Functions Directions: Complete without notes and by yourself to determine whether you have mastered this objective. 1) What are the x-intercepts of the graph of f(x) = x2 + 2x - 48? 2) What are the zeros of the function, g(x) = x2 – 4x + 45? 3) A graph of a polynomial function is show below. What are the zero(s) of this function?

4) A graph of a polynomial function is show below. What are the factor(s) of this function?

Answer Key: 1) x = -8 and x = 6 2) x = 9 and x = -5 3) x = -1, x = 2, and x = -3 4) (x + 4), (x + 2), (x – 5), and (x – 8)