a) \(Q\left(-3;4\right)\in\left(d\right)\Leftrightarrow\left(3-2a\right).\left(-3\right)+a-1=4\)
\(\Leftrightarrow-9+6a+a-1=4\)
\(\Leftrightarrow7a=14\Leftrightarrow a=2\)
b) \(\left(1;0\right)\in\left(d\right)\Leftrightarrow\left(3-2a\right).1+a-1=0\)
\(\Leftrightarrow-a+2=0\Leftrightarrow a=2\)
c) \(\left(0;-8\right)\in\left(d\right)\Leftrightarrow5.0-m=-8\Leftrightarrow m=8\)
d) \(\left(d\right)\cap\left(d'\right)=\left(2;y\right)\Leftrightarrow\left\{{}\begin{matrix}\left(m-1\right).2+2=y\\2.2-1=3=y\end{matrix}\right.\)
\(\Rightarrow2m-2+2=3\)
\(\Leftrightarrow m=\dfrac{3}{2}\)
Đúng 1
Bình luận (0)
