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

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

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

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

eseidl
 3 years ago
Best ResponseYou've already chosen the best response.1x=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?

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