Cov lus qhia linear yog ib feem ntawm qhov tseeb, yog li nws yuav tsum muaj lub siab xav ua tib zoo thaum siv, txawm tias siv cov lus qhia linear ua tau zoo, yog tias siv tsis raug, nws yuav tsis ua tiav qhov kev ua tau zoo, thiab yooj yim ua rau cov lus qhia linear puas tsuaj. Yog li ntawd, cov lus ceeb toom hauv qab no yuav tsum tau them sai sai thaum siv cov lus qhia linear: tiv thaiv xeb, ua kom ib puag ncig huv si, teeb tsa kom zoo, thiab teeb tsa cov cuab yeej kom raug.