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sadiebee123
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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
 11 months ago
 11 months 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
 11 months ago
 11 months ago

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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 \(\bf y = \color{red}{4}x\)
 11 months 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
 11 months ago

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

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

jdoe0001 Group TitleBest ResponseYou've already chosen the best response.0
dw:1380828836174:dw
 11 months 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
 11 months 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
 11 months 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?
 11 months ago

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

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

sadiebee123 Group TitleBest ResponseYou've already chosen the best response.0
Ohh okay, I think I understand this better thank you!
 11 months ago
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