Question 669003
(6, 8) is not a coordinate for that line
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{{{y = (-1/2)x + 4}}}
finding y 
{{{y = (-1/2)(6) + 4 = 1}}}: (6, 1)
finding x
{{{8 = (-1/2)x + 4}}}
x = -16 + 4 = -12 : (-12,8)
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{{{graph(300,200,-15,10,-1,10,(-1/2)x+4)}}}
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