anonymous
  • anonymous
Identify the vertex for the graph of y = -2x2 - 12x + 1. (-3, 19) (-3, 55) (3, -53) (3, -47) I tried this using GeoGebra but it didnt add up.
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
triciaal
  • triciaal
|dw:1439661674691:dw|
triciaal
  • triciaal
you can convert by completing the square vertex (h, k)

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anonymous
  • anonymous
I learned that stuff in my lesson. But was very confused on were to put what. Also, wouldn't just graphic it show you were the vertex's is?
triciaal
  • triciaal
yes you can always solve by graphing. either set up a table and plot (x, y) values or use that when y = 0 you get the x-intercepts and when x= 0 you have the y-intercept the line through the vertex is the "mirror" or half the parabola the x-value of the vertex is the line of symmetry
anonymous
  • anonymous
Im still a bit confused, could you walk me through?
triciaal
  • triciaal
|dw:1439662221348:dw|
anonymous
  • anonymous
ohhhhhh, ok.
triciaal
  • triciaal
|dw:1439662692924:dw|
anonymous
  • anonymous
Omg! I have been trying to under the "a, b & c" part for WEEKS! TY TY TY TY SO MUCH
triciaal
  • triciaal
now you know forever you are welcome
iYuko
  • iYuko
@triciaal Thanks for the math lesson. I took notes. c:
triciaal
  • triciaal
@iYuko you are so welcome

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