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January 12th, 2019, 03:53 PM   #1
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From: tornto

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Help x-intercept 2

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

Answer:
A

CORRECT OR NOT

3. Which of the following parabolas is 2 units higher than y = 2x^2 − 4x − 1, but has the same shape and opens in the same direction?
A. y = 2x^2 − 6x − 1
B. y = 2x^2 − 2x − 1
C. y = 2x^2 − 4x − 3
D. y = 2x^2 − 4x + 1

Answer
D

CORRECT OR NOT


4. What are the coordinates of the vertex of the parabola y = x^2 + 2x − 1?
A. (−2,5)
B. (−1,−2) ………
C. (−2,−1)
D. (−1,2)

Answer
B

CORRECT OR NOT


5. Which of the following equations has an axis of symmetry with the equation x = 1.5?
A. y = 2x^2 − 6x − 1
B. y = 2x^2 − 3x + 1
C. y = x^2 + 6x − 3
D. y = 2x^2 + 3x + 2

Answer
A

CORRECT OR NOT

THANKS MUCH

Last edited by skipjack; January 12th, 2019 at 09:42 PM.
yorkmanz is offline  
 
January 12th, 2019, 07:05 PM   #2
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At how many help sites did you post this?
Denis is offline  
January 12th, 2019, 09:49 PM   #3
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Well done, yorkmanz, your answers are all correct.
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