Mathematics, 09.07.2019 10:00 lovebug3563
According to the graph, what is the value of the constant in the equation below? (4,12.5)(5,10)(10,5)(20,2.5)plz a.15 b.5 c.2 d.50
Answers: 2
![\bf \qquad \qquad \textit{direct proportional variation} \\\\ \textit{\underline{y} varies directly with \underline{x}}\qquad \qquad y=kx\impliedby \begin{array}{llll} k=constant\ of\\ \qquad variation \end{array} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \begin{cases} x=10\\ y=5 \end{cases}\implies 5=10k\implies \cfrac{5}{10}=k\implies \cfrac{1}{2}=k](/tpl/images/0069/0211/a0c8f.png)
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According to the graph, what is the value of the constant in the equation below? (4,12.5)(5,10)(10,...
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