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DIA [1.3K]
2 years ago
14

Write an exponential function in the form y = ab* that goes through points (0,12) and (2,768).

Mathematics
1 answer:
adell [148]2 years ago
3 0

The exponential function is y=12(8)^{x}

Step-by-step explanation:

The form of the exponential function is y=ab^{x} , where

  • a is the value of y when x = 0
  • b is the rate of change

∵ The form of the exponential function is y=ab^{x}

∵ The function goes through points (0 , 12) and (2 , 768)

- Substitute the coordinates of the first point to find the value of a

∵ x = 0 and y = 12

∴ 12=ab^{0}

∵ b^{0}=1

∴ 12 = a(1)

∴ a = 12

Substitute the value of a in the form of the function

∴ y=12(b)^{x}

- Substitute the coordinates of the second point to find the value of b

∵ x = 2 and y = 768

∴ 768=12(b)^{2}

- Divide both sides by 12

∴ 64 = b²

- Take √ for both sides

∴ b = 8

- Substitute the value of b in the form of the function

∴ y=12(8)^{x}

The exponential function is y=12(8)^{x}

Learn more:

You can learn more about the logarithmic function in brainly.com/question/1447265

#LearnwithBrainly

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