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Question

Select the number which suits for the given graph:


1. It is a linear function.
2. It is a nonlinear function.
3. It is an exponential function.
4. It is not a function.
  1. 3

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Solution

The correct option is A 3
Plotting some points on the graph, we see:


Now, tabulating the values, we get:
Input Output
0 8
1 24
2 72

For an exponential function, we know, the ratio of consecutive y values should be equal.

Let us consider A = 8, B = 24, C = 72

BA=248=3

CB=7224=3

Here, the ratios are same.

Hence, the graph represents an exponential function.

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