4-2 Make a function table and a graph for the function y = –9x2. Is the function linear or nonlinear? Step 1 Make a function table using the rule y =

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4-2 Make a function table and a graph for the function y = –9x2. Is the function linear or nonlinear? Step 1 Make a function table using the rule y = –9x2. Lesson 4-2 Example 3

4-2 Make a function table and a graph for the function y = –9x2. Is the function linear or nonlinear? Step 2 Graph the ordered pairs. Lesson 4-2 Example 3

4-2 Make a function table and a graph for the function y = –9x2. Is the function linear or nonlinear? Step 3 The rate of change is nonconstant. Lesson 4-2 Example 3

4-2 Make a function table and a graph for the function y = –9x2. Is the function linear or nonlinear? Step 4 The function is nonlinear. The graph should show a smooth curve. Lesson 4-2 Example 3