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gfields444
Group Title
What is the equation of the line of symmetry for the graph of y = 3(x + 2)2 – 4?
 2 years ago
 2 years ago
gfields444 Group Title
What is the equation of the line of symmetry for the graph of y = 3(x + 2)2 – 4?
 2 years ago
 2 years ago

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eseidl Group TitleBest ResponseYou've already chosen the best response.1
The line of symmetry is the line that goes through the vertex of this parabola. Do you know how to find the vertex?
 2 years ago

eseidl Group TitleBest ResponseYou've already chosen the best response.1
Your equation is already given in what is called "vertex form". Given:\[y=a(xh)^2+k\]The vertex is the point (h,k).
 2 years ago

gfields444 Group TitleBest ResponseYou've already chosen the best response.0
Ohhh! Okay got it!
 2 years ago

eseidl Group TitleBest ResponseYou've already chosen the best response.1
So, what's the vertex?
 2 years ago

eseidl Group TitleBest ResponseYou've already chosen the best response.1
And remember that once you have the vertex, you still need to find the line of symmetry.
 2 years ago

eseidl Group TitleBest ResponseYou've already chosen the best response.1
x=2 is correct. Saying "2" doesn't tell us anything. Make sure you write x=2. This is a vertical line through the point (2,4). It cuts the parabola into symmetry halves. It is the line of symmetry for this parabola. Make sense?
 2 years ago

gfields444 Group TitleBest ResponseYou've already chosen the best response.0
Ohh, thank you so much. You helped a ton!
 2 years ago

eseidl Group TitleBest ResponseYou've already chosen the best response.1
no problem :)
 2 years ago
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