Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
sadiebee123
Group Title
Can someone please explain this to me??
Write an equation for the following transformation of y=x: a vertical stretch by a factor of 4
 one year ago
 one year ago
sadiebee123 Group Title
Can someone please explain this to me?? Write an equation for the following transformation of y=x: a vertical stretch by a factor of 4
 one year ago
 one year ago

This Question is Open

jdoe0001 Group TitleBest ResponseYou've already chosen the best response.0
y = A ( Bx + C ) + D A = vertical stretch thus if the "parent function" is \(\bf y = x\) the "transformed function" is \(\bf y = \color{red}{4}x\)
 one year ago

jdoe0001 Group TitleBest ResponseYou've already chosen the best response.0
transformed just means, the parent function, or a basic barebones function, with PADDED WITH EXTRA STUFF AROUND
 one year ago

sadiebee123 Group TitleBest ResponseYou've already chosen the best response.0
I just don't understand :c
 one year ago

jdoe0001 Group TitleBest ResponseYou've already chosen the best response.0
a parent function is just usually a barebone variable expression
 one year ago

sadiebee123 Group TitleBest ResponseYou've already chosen the best response.0
What does that mean?... I'm sorry I'm really terrible at math, it's not my cup of tea. I do a lot better when people explain things step by step..
 one year ago

jdoe0001 Group TitleBest ResponseYou've already chosen the best response.0
dw:1380828836174:dw
 one year ago

jdoe0001 Group TitleBest ResponseYou've already chosen the best response.0
as you PAD MORE STUFF to the written function, the graph moves about or "shifts" or "translates" about
 one year ago

jdoe0001 Group TitleBest ResponseYou've already chosen the best response.0
in the case above, I use vertical and horizontal "transformation", in your case for the exercise given, you just need a vertical stretch, that means a multiplier in front of it = A ( Bx + C ) + D A = vertical stretch C = horizontal shift D = vertical shift
 one year ago

sadiebee123 Group TitleBest ResponseYou've already chosen the best response.0
Oh okay, but how do I get a whole equation like that out of only y=x and 4?
 one year ago

jdoe0001 Group TitleBest ResponseYou've already chosen the best response.0
hmmm,... check above, my 1st line
 one year ago

sadiebee123 Group TitleBest ResponseYou've already chosen the best response.0
So I don't need all that extra C and D stuff?
 one year ago

jdoe0001 Group TitleBest ResponseYou've already chosen the best response.0
right, you don't the A, B, C, D components are for transformations of different kinds, you should know about, in this case, you only needed A, or the one in front of the function
 one year ago

sadiebee123 Group TitleBest ResponseYou've already chosen the best response.0
Ohh okay, I think I understand this better thank you!
 one year ago
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
 Engagement 19 Mad Hatter
 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.