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January 11th, 2019, 05:23 PM   #1
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help quadratic

5. Which of these quadratic functions has exactly one x-intercept?
A. y = x^2 − 9
B. y = x^2 − 6x + 9
C. y = x^2 − 5x + 6
D. y = x^2 + x − 6

A

2. What are the x-intercepts of y = (x − 2)(x + 5) ?
A. (0, 2) and (0, -5)
B. (0, -2) and (0, 5)
C. (-2, 0) and (5, 0)
D. (2, 0) and (-5, 0)

D

2. Which of the following parabolas opens upward and appears narrower than y = −3x^2 + 2x − 1 ?
A. y = 4x^2 − 2x − 1
B. y = −4x^2 + 2x − 1
C. y = x^2 + 4x
D. y = −2x^2 + x + 3

C


Are my answers correct or not?

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Last edited by skipjack; January 11th, 2019 at 06:33 PM.
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January 11th, 2019, 06:34 PM   #2
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Your answer to 5 is incorrect. The correct answer is B.

Your answer of D for 2 is correct.

Your final answer of C is incorrect. The correct answer is A.

You had posted 5 twice, so I removed the duplicate.
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