devinvanlue devinvanlue

21-05-2020
Mathematics

contestada

Which of the following functions best describes this graph?

Which of the following functions best describes this graph class=

Respuesta :

hollybenallie hollybenallie

08-10-2020

Answer:B

Step-by-step explanation:

Y=x^2-9x+20 a=1. b=-9. c=20

Find x-value

x=-b/2a

x=9/2

x=4.5

Plug in x-value into equation

y=4.5^2-9(4.5)+20

y=20.25-40.50+20

y=-20.25+20

y=-0.25

ANSWER: y=x^2-9x+20

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