here is the answer I just took a picture because I already answered this for someone eles
Answer:
The vertex is (2,1)
Step-by-step explanation:
ƒ(x) = –x^2 + 4x – 3
Factor out the negative
= -(x^2 -4x+3)
Factor
What 2 numbers multiply to +3 and add to -4
-3*-1 = 3
-3+-1 = -4
f(x) = -( x-3)(x-1)
Find the zeros
0 = -( x-3)(x-1)
0 = x-3 0 = x-1
x=3 x=1
The x value of the vertex is 1/2 way between the two zeros
(3+1)/2 = 4/2 =2
To find the y value, substitute x=2 in
f(2) = -( 2-3)(2-1)
=-(-1)(1) = 1
The vertex is (2,1)
Answer:
C
Step-by-step explanation:
All real numbers means all numbers positive and negative
Therefore, it would have to be C because the others dont have both positives and negatives for their domain and range reaches
Answer: A(4,0) and B(-2.0)
Step-by-step explanation:
First, do (x-4),
Now, x-4=0, then subtract
X=4
Now x+2
X+2=0, then subtract
X=-2
