Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 9 - Quadratic Functions and Equations - 9-1 Quadratic Graphs and Their Properties - Practice and Problem-Solving Exercises - Page 539: 44


K and L

Work Step by Step

The basic form of the equation is $y=a(k(x-d))^{2} + c$ $a\gt0$ says that a is greater than zero meaning that a value is positive. Since the a value is positive the graph opens upwards. The graphs of K and L have graphs that open upwards and thus have a positive a value.
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