Đề thi chính thức vào 10 môn Toán Sở GD&ĐT Lạng Sơ...

A \(\begin{array}{l}a)\,A = 1\,;\,\,\,B = 11\,;\,\,\,\,C = 1\\b)\,\,Q = 9\\c)\,\,Q = \sqrt x  + 4\,\end{array}\)

B \(\begin{array}{l}a)\,A =  - 1\,;\,\,\,B = 11\,;\,\,\,\,C = 1\\b)\,\,Q = 5\\c)\,\,Q = \sqrt x  - 4\,\end{array}\)

C \(\begin{array}{l}a)\,A = 1\,;\,\,\,B = 11\,;\,\,\,\,C =  - 1\\b)\,\,Q = 5\\c)\,\,Q = \sqrt x  + 4\,\end{array}\)

D \(\begin{array}{l}a)\,A =  - 1\,;\,\,\,B = 11\,;\,\,\,\,C =  - 1\\b)\,\,Q = 9\\c)\,\,Q = \sqrt x  - 4\,\end{array}\)

A a) Vẽ đồ thị

b) \(A\left( {3; - 9} \right);\,\,B\left( {2; - 4} \right)\)

B a) Vẽ đồ thị

b) \(A\left( { - 3;9} \right);\,\,B\left( {2; - 4} \right)\)

C a) Vẽ đồ thị

b) \(A\left( {3; - 9} \right);\,\,B\left( { - 2;4} \right)\)

D a) Vẽ đồ thị

b) \(A\left( { - 3;9} \right);\,\,B\left( { - 2;4} \right)\)

A \(\begin{array}{l}a)\,\,S = \left\{ {1;\,4} \right\}\\b)\,\,\left( {x;\,y} \right) = \left( {2; - 1} \right)\\c)\,\,m =  - 2\end{array}\)

B \(\begin{array}{l}a)\,\,S = \left\{ {1;\, - 4} \right\}\\b)\,\,\left( {x;\,y} \right) = \left( {2; - 1} \right)\\c)\,\,m = 2\end{array}\)

C \(\begin{array}{l}a)\,\,S = \left\{ { - 1;\,4} \right\}\\b)\,\,\left( {x;\,y} \right) = \left( { - 2; - 1} \right)\\c)\,\,m =  - 2\end{array}\)

D \(\begin{array}{l}a)\,\,S = \left\{ { - 1;\, - 4} \right\}\\b)\,\,\left( {x;\,y} \right) = \left( { - 2; - 1} \right)\\c)\,\,m = 2\end{array}\)