Question

math I
class 10
1 Linear Equations in two variables
important formula​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

For the pair of linear equations

a1 + b1y + c1 = 0 and a2 + b2y + c2 = 0,

the nature of roots (zeroes) or solutions is determined as follows:

(i) If a1/a2 ≠ b1/b2 then we get a unique solution and the pair of linear equations in two variables are consistent. Here, the graph consists of two intersecting lines.

(i) If a1/a2 ≠ b1/b2 ≠ c1/c2, then there exists no solution and the pair of linear equations in two variables are said to be inconsistent. Here, the graph consists of parallel lines.

(iii) If a1/a2 = b1/b2 = c1/c2, then there exists infinitely many solutions and the pair of lines are coincident and therefore, dependent and consistent. Here, the graph consists of coincident lines.

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