Cov lus qhia linear yog ib feem ntawm qhov tseeb, yog li nws yuav tsum muaj kev ceev faj heev thaum siv, txawm tias siv cov lus qhia linear ua tau zoo, yog tias siv tsis raug, tsis tuaj yeem ua tiav qhov kev ua tau zoo xav tau, thiab yooj yim ua rau cov lus qhia linear puas tsuaj. Yog li ntawd, cov kev ceev faj 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.