Need help on quadratic functions

Mathematics
Tutor: None Selected Time limit: 1 Day

The y-coordinate of the vertex of the parabolic graph of 
f(x) = ax2 + bx + c

 is 

Sep 23rd, 2015

Thank you for the opportunity to help you with your question!

The "y" coordinate of f(x) = ax^2 + bx + c, we have to plug the value (-b)/(2a) in for "x" and determine the value of "y." 

There is another way to do this, but it involves getting the quadratic into "vertex form."   y = (x-h)^2 + k.   In this case, "k" is the "y" coordinate of the vertex.



Please let me know if you need any clarification. I'm always happy to answer your questions.
Sep 23rd, 2015

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