Find the vertex of the parabola y = 3x2 – 9x + 12, using the formulas for h and k.
a.(-3/2,21/4)
b.(-3/2,-75/4)
c. (-3/2,129/4)
d. (3/2,21/4)
e. none of the above
thank you!!
Hi sky,
What we want to do is put your general equation into vertex form. Let's factor out a 3 from your first two terms like this:
Next, we'll complete the square with what we have inside the parentheses:
Finally, will arrage the above into vertex form.
Vertex form is where (h, k) is the vertex of the parabola.
That would make your vertex