The parabola with equation y=ax^2 and vertex (h,k) is reflected about the line y=k. This results in the parabola with equation y=dx^2+ex+f. In terms of k, what is the value of a+b+c+d+e+f?
+639 Here is a very well described solution!
https://artofproblemsolving.com/wiki/index.php/2001_AMC_12_Problems/Problem_13
Here to help
:D
