Question

Answer 1

\(1,f\left(0\right)=\dfrac{1}{2}\cdot0+5=5\\ \Rightarrow C\\ 2,\Rightarrow m-3=0\Rightarrow m=3\\ \Rightarrow B\\ 3,\Rightarrow m-2>0\Rightarrow m>2\\ \Rightarrow C\\ 4,\Rightarrow m+3< 0\Rightarrow m< -3\\ \Rightarrow D\\ 5,\text{Thay }x=0;y=1\\ \Rightarrow\left\{{}\begin{matrix}1=0-1\left(l\right)\\1=\dfrac{1}{2}\cdot0\left(l\right)\\1=2\cdot0+1\left(n\right)\\1=3\left(0\left(l\right)\right)\end{matrix}\right.\Rightarrow C\\ 6,\Rightarrow a+3=2,5\Rightarrow a=-0,5\\ \Rightarrow A\)

Answer 2

1C 2B 3C 4D 5C 6A