find the value of k if the line joining the points (3k, 8) and (k, -3) has a gradient of 3.
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tmohidp96g60:
can you guide me that why you use+- for solving it
as we know that gradient can either positive or negative...in the case you cant determine it ..use both symbols
so it means that using +- both is not important....
no!!
because i checked answer in answer there is only 1 answer is written
in the answers of my book
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