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Home > Algebra 1 > Chapter 9 > 9.8 Comparing Linear, Exponential, and Quadratic Models > 9.8 Problem Solving Help
 
   
Return to book index Chapter 9 : Quadratic Equations and Functions
9.8 Problem Solving Help

Help for Exercises 21 and 22 on page 558

For Exercises 21 and 22, it may be helpful to look at a simpler problem in order to understand the pattern that can be found with a quadratic equation. For example, consider the quadratic equation Y=X2. We can create a table of values and investigate the relationship between successive values of y.

Y=X2
0 0 --------
1 1 1
2 4 3
3 9 5
4 16 7

As you can see from the table, each successive change in y results in a value that is two more than the previous change. A similar pattern can be found for the equation in Exercises 21 and 22.