Mathematics, 13.07.2019 16:30 gstinson98
The vertices of an isosceles triangle are a (-10, 1), b (-6, 3) and c (-4, 7). what is the equation of the triangle's line of symmetry? y = - x - 3 y = - x + 3 y = x + 3 y = x - 3
Answers: 1
![\bf (\stackrel{x_1}{-6}~,~\stackrel{y_1}{3})\qquad \qquad \qquad slope = m\implies -1 \\\\\\ \stackrel{\textit{point-slope form}}{y- y_1= m(x- x_1)}\implies y-3=-1[x-(-6)] \\\\\\ y-3=-1(x+6)\implies y-3=-x-6\implies y=-x-3](/tpl/images/0085/4171/047ea.png)
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The vertices of an isosceles triangle are a (-10, 1), b (-6, 3) and c (-4, 7). what is the equation...
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