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Which graph shows \( f(x)=3 \cdot 2^{x}-2 \) and its translation \( g(x)=3 \cdot 2^{x}+3 ? \)

Ask by Reeves Warren. in the United States
Mar 12,2025

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The graph shows two exponential curves. One has a horizontal asymptote at \( y = -2 \) and passes through the points \((0,1)\) and \((1,4)\). The other curve is the first one shifted upward by 5 units, with a horizontal asymptote at \( y = 3 \) and passing through \((0,6)\) and \((1,9)\).

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Bonus Knowledge

To visualize the transformation between the functions \( f(x) = 3 \cdot 2^{x} - 2 \) and \( g(x) = 3 \cdot 2^{x} + 3 \), imagine starting with an exponential growth curve for \( f(x) \). The function starts off with a vertical asymptote at \( y = -2 \), which means it approaches -2 but never touches it. Now, for \( g(x) \), it’s like lifting the entire curve of \( f(x) \) up by 5 units because it shifts up from \(-2\) to \(3\). This means you’ll have a similar shape, just sitting higher on the graph! When graphing both functions, you'll notice that \( g(x) \) not only retains the original steepness of \( f(x) \), but its y-intercept also shifts. For \( f(x) \), the y-intercept is at \( (0, 1) \); for \( g(x) \), it's at \( (0, 6) \). The transformation illustrates how crucial vertical shifts are in altering functions without affecting their growth rate.

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