102. Why does the graph of a quadratic function open up if a >0 and down if a < 0?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter9: Quadratic Functions And Equations
Section9.4: Solving Quadratic Equations By Factoring
Problem 47PPS
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102. Why does the graph of a quadratic function open up if a >0
and down if a < 0?
Transcribed Image Text:102. Why does the graph of a quadratic function open up if a >0 and down if a < 0?
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