Since you were able to type that negative, I will assume that
f(x)=-x^2+3x+8
the vertex is where the graph changes from increasing to decreasing or vice verca
find theh vertex
-b/2a is x coordinate of vertex where
f(x)=ax^2+bx+c
a=-1
b=3
-3/2(-1)=-3/-2=3/2
we see that the leading coeficient (a) is negative so the graph opens down
it increases then decreases at the vertex
so from negative infinity to 3/2 is interval
in interval nottaion
(⁻∞,3/2]
Answer:
Yes, it is a function
Step-by-step explanation:
Because each x-value has only one y-value
Answer:
7/9
Step-by-step explanation:
5 5/6 equals 35/6. 7 1/2 is equal to 15/2.
Then you do 35/6 times 2/15. You flip the 15/2 to get 2/15.
35/6 times 2/15 is 70/90 which equals 7/9.
Hope this helps :)
I wanna say the second on but not sure
