given a linear equation 3 x minus 5 y is equal to one form another linear equation in this variables such that the geometrical representatio

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given a linear equation 3 x minus 5 y is equal to one form another linear equation in this variables such that the geometrical representation of linear and so formed is first intersecting lines second coincident lines third parallel lines​

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Ella 1 month 2021-10-22T01:34:26+00:00 1 Answer 0 views 0

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    2021-10-22T01:36:04+00:00

    Graphical Method of solving pair of linear equations in two variables

    The general form for a pair of linear equations in two variables x and y is  

    a1x + b1y + c1 = 0 ,

    a2x + b2y + c2 = 0 ,  

    Where a1, a2, b1, b2, c1, c2 are all real numbers ,a1²+ b1² ≠ 0 & a2² + b2² ≠ 0.

    Condition 1: Intersecting Lines

    If   a 1 / a 2 ≠  b 1 / b 2  , then the pair of linear equations has a unique solution.

    Condition 2: Coincident Lines

    If   a 1 / a 2 =  b 1 / b 2 =  c 1 / c 2  ,then the pair of linear equations has infinite solutions.

    A pair of linear equations, which has a unique or infinite solutions are said to be a consistent pair of linear equations.

    A pair of linear equations, which has  infinite many distinct common solutions are said to be a consistent pair or dependent pair of linear equations.

    Condition 3: Parallel Lines

    If   a 1/ a 2 =  b 1/  b 2 ≠  c 1 / c 2 , then a pair of linear equations   has no solution.

    A pair of linear equations which has no solution is said to be an inconsistent pair of linear equations.

    —————————————————————————————————-

    Solution:

    Given:  

    2x+3y-8=0…………………………………….(i)

    i) For intersecting lines, a1 /a2 ≠ b1/b2

    ∴ Any line intersecting with eq i may be taken as  

    3x +2y -9=0    or       3x+2y -7 =0

    ii) For parallel lines ,  a1 /a2 = b1/b2 ≠ c1/ c2

    ∴ Any line parallel with eq i may be taken as  

    6x +9y +7=0    or       2x+3y -12 =0

    iii) For coincident lines, a1 /a2= b1/b2 =c1/c2

    ∴ Any line coincident with eq i may be taken as  

    4x +6y -16=0    or       6x+9y -24 =0

    —————————————————————————————————-

    Hope this will help you….

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