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If the point (3, 4) lies on the graph of the equation 3y = ax+7, find the value of a. Q.3

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Sir please help me to solve the ncert class 9th solution of chapter linear equations in two variables .How I solve this question of exercise 4.3 question number 3. Find the simplest and easiest solution of this question. If the point (3, 4) lies on the graph of the equation 3y = ax+7, find the value of a.

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  1. Solution:

    The given equation is

    3y = ax+7

    According to the question, x = 3 and y = 4

    Now, Substituting the values of x and y in the equation 3y = ax+7,

    We get,

    (3×4) = (a×3)+7

    ⟹ 12 = 3a+7

    ⟹ 3a = 12–7

    ⟹ 3a = 5

    ⟹ a = 5/3

    The value of a, if the point (3,4) lies on the graph of the equation 3y = ax+7 is 5/3.

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