MCQ

Share

The function $f : A \rightarrow B$ defined by $f(x) = -x^2 + 6x- 8$ is a bijection if,

• ✓
  $\text{A}=(-\infty,3]$ and $\text{B}=(-\infty,1]$
• B
  $\text{A}=[-3,\infty)$ and $\text{B}=(-\infty,1]$
• C
  $\text{A}=(-\infty,3]$ and $\text{B}=[1,\infty)$
• D
  $\text{A}=[3,\infty)$ and $\text{B}=[1,\infty)$