Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

waheguru Group Title

Can someone explain this please What will the point (-3, 9) from the base parabola, be transformed to after: A vertical stretch by a factor of 2: Followed by a vertical reflection: Followed by a horizontal translation of 4 units to the right: Followed by a vertical translation of 2 units up: What will the equation be?

  • one year ago
  • one year ago

  • This Question is Closed
  1. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    This is quadratics

    • one year ago
  2. zepdrix Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    So we start with the function, the base parabola, \(\large y=x^2\) Stretching it by a factor of 2, \(\large y=2x^2\) Then reflecting it vertically, \(\large y=-2x^2\) Then a horizontal shift to the RIGHT 4 units, \(\large y=-2(x-4)^2\) Then finally, a vertical shift UP 2 units, \(\large y=-2(x-4)^2+2\)

    • one year ago
  3. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    but the question says what will the point (-3,9) be ?

    • one year ago
  4. zepdrix Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    So there is the equation. Let's see if we can figure out where (-3,9) moves to.. hmm :\

    • one year ago
  5. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Is the question asking us to make an equation using the points -3, 9 or without the points

    • one year ago
  6. zepdrix Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    The last part says "What will the equation be?" That's the part we've determined already. It doesn't involve the point (-3,9). I'm not exactly sure how they want us to do that first part. It seems the question wants to know where that point would be on our new parabola, relative to it's location on the old one. We've stretched it, and moved things around .. I'm not sure how we would determine that :O Hmm

    • one year ago
  7. zepdrix Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    I guess we could measure from 3 units left of the vertex of our new parabola, and determine the function value it gives us. \(\large f(x)=-2(x-4)^2+2\) Our function has a vertex at \(\large (4,2)\). So three units left of that would be at x=1. \(\large f(1)=-2(1-4)^2+2\) And this should tell us where that point now lies. I think...

    • one year ago
  8. zepdrix Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Hmm kinda confusing though XD maybe there's a simpler way to do that.

    • one year ago
  9. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Thats fine Ill check with my teacher

    • one year ago
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.