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Given the equation f(x) = [x], how would h(x) = -xl shift?

A. Reflection over x-axis
B. Reflection over y-axis
C. Vertical compression
D. Vertical stretch

User Xavi Gil
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1 Answer

4 votes

Final answer:

The function h(x) = -xl applies a vertical stretch or compression to the original function f(x) = [x].

Step-by-step explanation:

To determine how the function h(x) = -xl shifts given the equation f(x) = [x], we need to understand the effect of each transformation on the original function.

The function f(x) = [x] represents the greatest integer function, which rounds down any real number x to the nearest integer less than or equal to x. It can also be visualized as a step function with vertical lines at each integer value.

The function h(x) = -xl applies a vertical stretch or compression to the original function. Specifically, if l > 1, the function is vertically compressed, and if 0 < l < 1, the function is vertically stretched.The negative sign indicates a reflection across the x-axis. Without any additional horizontal or vertical shifts, the graph of h(x) will be a mirror image of the graph of f(x), but flipped over the x-axis. This means that all the points that were above the x-axis in the parent function will now be below the x-axis by the same vertical distance.

User Austin Henley
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