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Rajan@2021
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Solve the equations graphically: x+2y+2=0, 3x+2y-2=0

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Sir please give me a detailed solution of this question as it was already asked in previous year paper of 2014 in which we have given that x+2y+2=0, 3x+2y-2=0 and we need to solve these equations graphically

RS Aggarwal, Class 10, chapter 3A, question no 10.

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  1. x+2y+2=0….(1)
    3x+2y−2=0……(2)

    Isolate x from equation (1) and find the value of x and y.
    x+2y+2=0
    or x=−2y−2

    x: −2      0      2
    y: 0   −1   −2

    Similarly, isolate x from equation (2) and find the values of x and y.

    3x+2y−2=0
    or x=(2−2y)/3

    x: 0   2  −2
    y: 1 −2    4

    Graph:

    As expressed in above graph where red line=> x+2y+2=0 &  blue line =>3x+2y−2=0

    Both the lines intersect each other at point (2,−2).
    So, x=2,y=−2

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