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If the points \\(1,5\\) and \\(3,1\\) are included in the value table of a line, which of the following equations represents that line?

Answer and explanation

Correct answer: \\(2x+y=7\\)

Substituting the point \\(1,5\\) in option A gives \\(2(1)+5=7\\), and substituting \\(3,1\\) gives \\(2(3)+1=7\\). Thus, both points satisfy \\(2x+y=7\\), so this equation represents their line. For example, option C works for the first point because \\(1+5=6\\), but it fails for the second point since \\(3+1=4\\neq6\\). Exam tip: The quickest method is to substitute both given points into each option.

Related tags

Value TableLine EquationGraphical MethodLinear EquationsCoordinate GeometryGraphical Method Of Finding Solutions.Graphical Method Of Finding SolutionsPair Of Linear Equations In Two Variables

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