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Sagot :
Answer:
2nd option
Step-by-step explanation:
kf(x) scales the graph of f(x) in the vertical direction.
• k > 1 stretches
• 0 < k < 1 compresses
Here k = 2 , thus a vertical stretch
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Given f(x) then f(x + a) is a horizontal translation of f(x)
• If a > 0 then a shift to the left of a units
• If a < 0 then a shift to the right of a units
Here [tex]\sqrt{x-1}[/tex] has a < 0 then a shift of 1 unit to the right
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