A) \[14x+23y=40\]
B) \[14x-23y=40\]
C) \[23x+14y=40\]
D) \[23x-14y=40\]
Correct Answer: A
Solution :
[a] A is \[\left( 1,-2 \right)\] B is image of A w.r.t. \[x-y+5=0\text{ }i.e.\left( -7,6 \right)\] C is image of A w.r.t. \[x+2y=0~\,\,i.e.\text{ }\left( \frac{11}{5},\frac{2}{5} \right)\] Now equation of BC is \[y-6=\frac{(2/5)-6}{\left( 11/5 \right)+7}(x+7)\] \[\Rightarrow 14x+23y=40\]You need to login to perform this action.
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