Question

Find the vertex of the parabola formed by the following quadratic function: y=-3x^2+12x-7
A)(-2,-43)
B)(2,5)
C)(-1,-22)
D)(1,2)

Answer 1

lol yeah dear why not?

Answer 2

it is the same as the last one, use \[-\frac{b}{2a}\]

Answer 3

in your example \(b=12,a=-3\) what do you get?

Answer 4

idk I don't think im doing it right

Answer 5

or the calc on my phone is doing something wrong

Answer 6

lol use paper dear, it is easier

Answer 7

\[-\frac{12}{2\times (-3)}\]

Answer 8

two minus signs makes a plus, and 6 goes in to 12 2 times