## Algebra 1

Published by Prentice Hall

# Chapter 9 - Quadratic Functions and Equations - 9-1 Quadratic Graphs and Their Properties - Practice and Problem-Solving Exercises - Page 539: 46

K

#### Work Step by Step

The basic form of the equation is $y=a(k(x-d))^{2} + c$ The a value in a equation determines the vertical stretch or compression. As the a value increases the graph is vertically stretched and becomes narrower. The graph of K has the highest a value and is vertically stretched and is narrower.

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