For what value (s) of awill the two points `(1,a ,1)a n d(-3,0,a)`lie – InterviewSolution

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1.	For what value (s) of awill the two points `(1,a ,1)a n d(-3,0,a)`lie on opposite sides of the plane `3x+4y-12 z+13=0?`a. `a >-1ora >1//3`b. `a=0`onlyc. `0A. `alt-1oragt1//3`B. a=0 onlyC. `0ltalt1`D. `-1ltalt1`
Answer» Correct Answer - a We must have `(3+ 4a -12+13)(-9-12a+13) lt 0`. or `" "(a+1)(12a-4) gt 0` or `" " a lt -1 or a gt 1//3`

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