Mathematics, 28.07.2019 20:00, mez64
What is the x intercept that is perpendicular to y=4/3x+1 and passes through (-4,9)
Answers: 1
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![\bf \begin{array}{ccccccccc} &&x_1&&y_1\\ &&(~ -4 &,& 9~) \end{array} \\\\\\ % slope = m slope = m\implies -\cfrac{3}{4} \\\\\\ % point-slope intercept \stackrel{\textit{point-slope form}}{y- y_1= m(x- x_1)}\implies y-9=-\cfrac{3}{4}[x-(-4)] \\\\\\ y-9=-\cfrac{3}{4}(x+4)](/tpl/images/0144/0180/44b14.png)
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