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

o A. y= 4x^2 −2x−1

o B. y= − 4x^2 +2x−1

o C. y= x^2 +4x

o 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?

o A. y=2x^ 2 −6x−1

o B. y=2x^ 2 −2x−1

o C. y=2x^ 2 −4x−3

o 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 ?

o A. (−2,5)

o B. (−1,−2) ………

o C. (−2,−1)

o 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 ?

o A. y=2x^ 2 −6x−1

o B. y=2x^ 2 −3x+1

o C. y=x ^2 +6x−3

o D. y=2x^ 2 +3x+2

Answer

A

CORRECT OR NOT

THANKS MUCH