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Question

If (4, 19) is a solution of the equation y=ax+3, then a =


A

3

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B

4

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C

5

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D

6

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Solution

The correct option is B

4


(4,19) is a solution of the equation y=ax+3,

x=4, y=19 will satisfy the equation.

19=a×4+3=4a+3

4a=193=16 a=164=4

a=4


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