Transformations of Quadratic Functions

Question 1

Describe the three errors.

Revolt · Accepted Answer

The three errors are: 1. The student failed to switch both instances of 'x' with 'y' when finding the inverse. 2. Only the principal square root was used instead of both positive and negative roots (plus-minus sign). 3. The domain restriction is incorrect; for the radicand to be non-negative, the inequality sign for x should be properly defined as x >= something rather than the incorrect direction provided.

Question 2

Choose the inverse of y = x2 – 10x.

Revolt · Accepted Answer

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Question 3

Where a = and b = ln

Revolt · Accepted Answer

1.34

Question 4

Check your answer. Did you identify these three errors correctly?

Revolt · Accepted Answer

The student did not switch both instances of x with y. He should have written x = y2 + 12y.; He wrote only the principal square root instead of using the ± sign.; The domain is incorrect. For the radicand to be greater than or equal to zero, x must be less than or equal to zero. It should be x 0.

Question 5

What is the domain of the function?

Revolt · Accepted Answer

1

Question 6

Where a = and b = ln

Revolt · Accepted Answer

– 10

Transformations of Quadratic Functions Answers

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