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Question no 17 & 18

$\mathbf{17}\mathbf{.}FindtheareaofthequadrilateralwhoseverticestakeninorderareA(-5,-3),B(-4,-6),C(2,-1)andD(1,2).\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}\mathbf{18}\mathbf{.}ForwhatvalueofkthepointsA(1,5),B(k,1)andC(4,11)arecollinear?$

Here are links to similar queries as asked by you

https://www.meritnation.com/ask-answer/question/if-1-5-p-1-and-4-11-are-collinear-find-the-val/coordinate-geometry/7126275

https://www.meritnation.com/ask-answer/question/find-the-area-of-the-quadrilateral-whose-vertices-taken-in/coordinate-geometry/6296014

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