Choosing y = 2 in 3x + 4y = 20 was preferred because it gives x as:
AA negative
BA decimal
CAn integer
DA fraction
Answer & Solution
Correct answer: C. An integer
1. y = 0 gives a non-integer x.
2. y = 2 gives x = 4.
3. Integer points are easy to plot.
_Source: NCERT Class 10 Mathematics, Chapter 3, Pair of Linear Equations in Two Variables._
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