The correct answer is: [A]: "(3, 10)" .
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We are given the equation:
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" y = 3x + 1 "
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When "x = 3" (in this equation), "y =10".
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Let us plug in "3" for "x" in this equation, and see what "y" equals:
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y = 3x + 1 ;
y = 3*(3) + 1 ;
y = 9 + 1 = 10
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So, Answer choice, [A]: (3,10) ; is a solution to the equation, "y = 3x+1" .
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The other answer choices are incorrect.
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