<![CDATA[Math Is Fun Forum / help intercepts]]> 2019-01-13T08:36:15Z FluxBB https://www.mathisfunforum.com/viewtopic.php?id=24744 <![CDATA[Re: help intercepts]]> hi yorkmanz

Welcome to the forum.

Looks like you've got these sorted ; I agree with all your answers.

Bob

]]>
https://www.mathisfunforum.com/profile.php?id=67694 2019-01-13T08:36:15Z https://www.mathisfunforum.com/viewtopic.php?pid=406724#p406724
<![CDATA[help intercepts]]> 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

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

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)

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