SOLUTION: if x=3 and y=-2 in Equation 3x-ky=1 then what is the vale of k

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Question 849264: if x=3 and y=-2 in Equation 3x-ky=1 then what is the vale of k
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
3x-ky%2B%28-3x%29=1%2B%28-3x%29
-ky%2B3x%2B%28-3x%29=1%2B%28-3x%29
-ky%2B0=1%2B%28-3x%29
-ky=1%2B%28-3x%29
-ky%28-1%2Fy%29=%281%2B%28-3x%29%29%28-1%2Fy%29
%28-1%29%28-1%29k%281%29=%28-1-%28-3%29%29%2Fy
highlight%28highlight%28k=%28-1%2B3x%29%2Fy%29%29

You already know what values you will use for x and y. Substitute into the solved formula for k and evaluate.


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Do not let the finely detailed steps bother you; I'm not sure what kind of understanding yet you have. The solution for k in symbols could use much fewer steps, like this:
3x-ky=1
-ky=1-3x
k=%281-3x%29%2F%28-y%29
highlight%28highlight%28k=%28-1%2B3x%29%2Fy%29%29, which is the same as k=%283x-1%29%2Fy.