gabysilva00107 gabysilva00107
  • 25-07-2017
  • Mathematics
contestada

Write an exponential function y=an^x for a graph that includes (-4,72) and (-2,18)

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irspow
irspow irspow
  • 25-07-2017
18/72=(ar^-2)/(ar^-4)

1/4=r^2

r=(1/4)^(1/2)

r=1/2

18=a(1/2)^-2

18=4a

9/2=a

y=(9/2)(1/2)^x


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wes23465
wes23465 wes23465
  • 13-11-2019

Answer: 1/2

Step-by-step explanation: hope u got it right

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