Step-by-step explanation:
18x+3xy+5y-12xy+4y-8=18x-9xy+y-8
Answer:
Tax is $1.66
Step-by-step explanation:
(18.40×0.09) = 1.66
Since y is the suqraed term, it opens left or right
in this form it is
(y-k)²=4p(x-h)
(h,k) is the vertex
if p is negative then it opens to the left and directix is to the right of the vertex
if p is positve then it opens to the right and directix is to the left of the vertex
p is the distance from vertex to directix
so
(y-0)²=4(-6)(x-0)
the vertex is (0,0)
-6 is negative
so
vertex is (0,0)
directix is 6 unts to the right of (0,0) or at x=6
the directix is x=6
