PLEASE HELP!! #8 k(x)=4x-2 on [3, 3+h]

Mathematics

1 answer:

zlopas [31]3 years ago

4 0

X=h/4+5/4 is the correct answer

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$\bf 4x+5y+2=0\implies 5y=-4x-2\implies y=\cfrac{-4x-2}{5} \\\\\\ y=-\cfrac{4}{5}x-\cfrac{2}{5}\impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array}$

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$\bf (\stackrel{x_1}{3}~,~\stackrel{y_1}{0})~\hspace{10em} slope = m\implies -\cfrac{4}{5} \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-0=-\cfrac{4}{5}(x-3)\implies y=-\cfrac{4}{5}x+\cfrac{12}{5}$

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u have to combine like terms and should be in order!!!

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