The graph of y = f(x) is transformed to y = 3f(x) - 6. Which describes the transformation?

Vertical stretch by 3, then down 6 The factor 3 stretches vertically by 3; subtracting 6 shifts down 6.

Vertical stretch by 3, then down 6

Vertical stretch by 3, then up 6

Vertical compression by 3, then down 6

Up 3, then vertical compression by 6

Nonlinear Functions

SAT Math· difficulty 4/5

y = f(x)

Explanation

The factor 3 stretches vertically by 3; subtracting 6 shifts down 6.

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