SOLUTION: Hello, Could u pls help me with this: Use the quadratic equation y = x2 + 3x – 10. Where does the vertex of the parabola lie? Thanks a lot, H.H

Algebra ->  Graphs -> SOLUTION: Hello, Could u pls help me with this: Use the quadratic equation y = x2 + 3x – 10. Where does the vertex of the parabola lie? Thanks a lot, H.H      Log On


   

Question 593573: Hello,
Could u pls help me with this:
Use the quadratic equation y = x2 + 3x – 10.
Where does the vertex of the parabola lie?
Thanks a lot,
H.H
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
the general vertex form is ___ y = a(x - h)^2 + k , with the vertex at (h,k)

y = 1(x^2 + 3x) - 10

completing the square ___ y = 1(x^2 + 3x + 9/4) - 10 - 9/4 ___ y =1(x + 3/2)^2 - 49/4