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What is the effect on the graph of f(x) = |x| when the function is changed to

g(x) = |3x| +1?
A. The graph is compressed vertically and shifted to the right 1 unit.
B. The graph is stretched horizontally and shifted up 1 unit.
C. The graph is compressed horizontally and shifted up 1 unit.
D. The graph is stretched vertically and shifted to the left 1 unit.

User TechFind
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1 Answer

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The effect on the graph would be C. The graph is compressed horizontally and shifted up 1 unit.

How does the graph change ?

Multiplying by 3 inside the absolute value |3x| affects the horizontal stretch or compression of the graph.

This is because for each value of ( x ), the value of |3x| reaches the same height as |x| but three times faster. So, the graph becomes narrower, or compressed horizontally.

Adding 1 to the entire function ( +1 ) affects the vertical shift of the graph. When you add a constant to the entire function, it shifts the graph vertically. In this case, adding 1 shifts the entire graph up by 1 unit.

Combining these two effects, the function g(x) = |3x| + 1 results in a graph that is horizontally compressedand shifted upwards by 1 unit .

User Fraggley
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