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Lerok [7]
3 years ago
14

The graph shows the function f(x) which equation represents f(x)

Mathematics
2 answers:
MakcuM [25]3 years ago
8 0

Answer:

The correct option is 3.

Step-by-step explanation:

The parent cube root function is

g(x)=\sqrt[3]{x}

From the given graph it is clear that the graph of f(x) is transformed by reflecting the graph of g(x) across y-axis and shifting two units down.

If the parent cube root function is reflected across the y-axis, then x is replaced by -x.

g(-x)=\sqrt[3]{-x}

Now, the graph of new function sifts 1 unit down. So, the required function is

f(x)=\sqrt[3]{-x}-1

The graph shows the function f(x)=\sqrt[3]{-x}-1.

From the given graph it is clear that the graph passes through the points (-8,1), (0,-1) and (8,-3).

Check the above function by these points.

At x=-8,

f(-8)=\sqrt[3]{-(-8)}-1=2-1=1

At x=0,

f(0)=\sqrt[3]{-(0)}-1=0-1=-1

At x=8,

f(8)=\sqrt[3]{-(8)}-1=-2-1=-3

All these points satisfy by the abobe function. It means the above function is correct.

Therefore the correct option is 3.

victus00 [196]3 years ago
3 0
Try to find points with integer coordinates like (0, -1). Then substitute x in the equations and check which ones give the correct y. For my example, you substitute x by 0 and check if y is equal to -1. You find that only the third one holds true.
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