Mathematics, 23.04.2020 20:25 wirchakethan23
Find the points of intersection of the lines 10x−4y=2 and 2x+8y=7 without graphing.
Answers: 3
in the equation 
![2x+8y=7\\2[\frac{1+2y}{5}]+8y=7\\ 2+4y+40y=35\\44y=35-2\\44y=33\\y=\frac{33}{44}\\ =\frac{3}{4}](/tpl/images/0621/9394/ac3d7.png)
in the equation ![x=\frac{1+2y}{5}\\=\frac{1}{5}[1+2(\frac{3}{4})]\\=\frac{1}{5}[1+(\frac{3}{2})]\\\\=\frac{1}{5}(\frac{2+3}{2}) \\\\=\frac{1}{5}(\frac{5}{2})\\\\=\frac{1}{2}](/tpl/images/0621/9394/b6e80.png)
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Find the points of intersection of the lines 10x−4y=2 and 2x+8y=7 without graphing....
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