Question

Explain how the graph of the function \( h(x) = -\sqrt{x} \) is affected by the transformation compared to the original \( f(x) = \sqrt{x} \).

Ask by Turnbull Stuart. in South Africa
Jan 25,2025

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The graph of \( h(x) = -\sqrt{x} \) is the reflection of \( f(x) = \sqrt{x} \) over the x-axis. This means all the y-values of \( f(x) \) are multiplied by -1, making the graph start at the origin and decrease as x increases.

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The graph of the function \( h(x) = -\sqrt{x} \) is a reflection of the graph of \( f(x) = \sqrt{x} \) across the x-axis. While \( f(x) = \sqrt{x} \) only exists in the first quadrant (where y-values are positive), \( h(x) \) will stay in the fourth quadrant where all y-values are negative. This means every point on the original graph is flipped to have its y-coordinate multiplied by -1. In terms of key points, for \( f(x) = \sqrt{x} \), the point \( (1, 1) \) becomes \( (1, -1) \) in \( h(x) \), and similarly for other points like \( (4, 2) \) turning into \( (4, -2) \). So, the range of \( h(x) \) is now \( (-\infty, 0] \), while the domain remains the same: \( [0, \infty) \).

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