A) \[-7\]
B) \[4\]
C) \[7\]
D) \[-4\]
Correct Answer: C
Solution :
Here, \[20x+5y=3\] \[\Rightarrow \] \[5y=-20x+3\] \[\therefore \] \[y=-4x+\frac{3}{5}\] Slope of \[20x+5y=3\,\,\,\,Io-4\] We know, product of slopes \[=-1\]for perpendicular lines Hence, the slope of the line which passes through \[(-2,5)\] and \[(6,b)=\frac{b-5}{6-(-2)}\] Now, \[\frac{b-5}{6+2}=\frac{1}{4}\] \[\Rightarrow \] \[b-5=2\] \[\therefore \] \[b=5+2=7\]You need to login to perform this action.
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