Answer:
The range is all values greater than or equal to -1
y : y≥-1
Step-by-step explanation:
f(x)=(x-4)(x-2)
This functions is an upwards facing parabola. This means it has a minimum
The minimum is 1/2 way between the zeros
0=(x-4)(x-2)
x-4 =0 x-2 =0
The zeros are at 4 and 2
(4+2)/2 = 6/2 =3
The minimum is at x=3
The minimum value is at
f(3) = (3-4) (3-2) = -1 (1) =-1
The range is all values greater than or equal to -1
y : y≥-1
