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What is the equation of the line of symmetry for the graph of y = 3(x + 2)2 – 4?
 one year ago
 one year ago
What is the equation of the line of symmetry for the graph of y = 3(x + 2)2 – 4?
 one year ago
 one year ago

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eseidlBest 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?
 one year ago

eseidlBest 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).
 one year ago

eseidlBest 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.
 one year ago

eseidlBest 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?
 one year ago

gfields444Best ResponseYou've already chosen the best response.0
Ohh, thank you so much. You helped a ton!
 one year ago
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