Algebra 2 "Parabola"?
What is the x value of the vertex of the parabola below?
I'm not really sure but I think it could possibly -b or b/2a? I'm terrible at math:(
What are the coordinates of the minimum of y=(x+7)^2+4?
It's (7,4) right?
- GreywolfLv 68 years agoFavorite Answer
1. Here's a different way to look at this problem. Where is the parabola at its lowest? If it were x^2 + 4 or even ax^2 + 4, it would be when x=0. Here, you have (x-b) being squared not just x. So, when is x-b equal to 0? when x=b
2. Similarly for this problem, when is (x+7) equal to 0? when x=-7. Plug that in for the y-value.