Algebra-2

To represent a vertical stretch of by a factor of 3, followed by a reflection across the x-axis, we need to apply the transformations step by step:

 

Vertical stretch by a factor of 3: This means multiplying the function by 3, which stretches the graph vertically. We get

 

Reflection across the x-axis: This means multiplying the function by to flip the graph across the x-axis.

 

Thus, applying both transformations to

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