the 1 is the h and the -2 is the k
f(x) = a(x - h)^2 + k
f(x) = a(x-1)^2 -2
to find a substitute x=3, y=6 in
6= a(3-1)^2 -2
6 =a *2^2 -2
add 2 to each side
8 = 4a
a =2
f(x) = 2(x-1)^2 -2 this is the vertex form
distribute to get the standard from
f(x) = 2(x^2-2x+1) -2
2x^2 -4x+2-2
f(x) =2x^2-4x is the standard form
Choice A
There are 12 inches in a foot, so there should be 1/12 feet in an inch.
The expression should be x/12.
Number 2 is incorrect :
Number 1 :
(i dont think we can bare calculate this cause it;s too big ;-;)
Margaret sell27 and Ben sell30 and jamaal sell 39 I think it’s that tell me if it’s wrong
