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Question

If the point (3, 4) lies on the graph of 3y = ax + 7 then the value of a is 

(a) 25

(b) 53

(c) 35

(d) 27


Solution

ANSWER:
Given equation: 3y = ax + 7.

Also, (3, 4) lies on the graph of the equation.

Putting x = 3, y = 4 in the equation, we get:

3×4=3a+712=3a+73a=127=5a=53

Hence, the correct answer is option (b).


Mathematics
Secondary School Mathematics IX
Standard IX

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