Asked by Loren
Which of the following functions has an inverse that is not a function?
y=x
y=2x+1
y=x to the second power
y=x
y=2x+1
y=x to the second power
Answers
Answered by
MathMate
Hint: Use the horizontal test:
If you draw a horizontal line through the function, and it is possible to intersect the function at more than one point, then the inverse is not a function.
If you draw a horizontal line through the function, and it is possible to intersect the function at more than one point, then the inverse is not a function.
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