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For the line (x+y=13), which point is obtained when (x=5)?

Answer and explanation

Correct answer: ( (5,8) )

The direct answer is option A, (5,8). The point must satisfy x+y=13, and x is given as 5. Substitute x=5: 5+y=13. Subtract 5 from both sides: y=8. Therefore the ordered pair is (5,8), with x written first and y second. Option B, (8,5), reverses the coordinates; its sum is 13, but it does not have x=5. Option C, (5,13), has the correct x but gives sum 18, not 13. Option D, (13,5), reverses the required roles and gives sum 18. The key is to use both conditions: the equation and the specified x-value. Memory cue: ordered pairs are always written (x,y), never (y,x).

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Linear EquationsTable ValuesGraph Plotting

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