Question

find the vertex of the parabola
f(x)=x^2-4x-2

Answer 1

complete the squares of RHS

Answer 2

this is the formula: x = -b / (2a)
if you plug x into your formula, you'll find the y coordinate

Answer 3

y= f(x)=x^2-4x-2
y=x^2-4x-2
y=f(x)=x^2-4x+4 -6
y=(x-2)^2 -6
y+6=(x-2)^2
vertex is 2,-6

Answer 4

never done these kind of equations and im lost when you you put up formulas i learn better by seeing a problem worked out but i do like to try to help in the formation of the answer

Answer 5

ok, you're -b = 4.
2a = 2.

4/2 = 2, so x = 2. Now plug that 2 back into the function you just posted.

Answer 6

so would f(x)=-6

Answer 7

it wants the answer as a ordered pair so would the pair be (2,-6)?

Answer 8

yes, that is it. exactly :)

Answer 9

its just a simple formula, do many problems.

Answer 10

ty odd for walking threw that with me im a right brain person i have to see it a few times to understand it but i also dont just want the answers handed to me i like to try to learn by doing some of the work to