GROWTH DEVELOPMENT CHILD
SUMMATIVE ASSESSMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Cannot be determined
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None of the above
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Detailed explanation-1: -And we can determine the factor change of y by substituting 2 for the the factor change of x. So, when x is doubled, y is quadrupled.
Detailed explanation-2: -and hence z will also be doubled.
Detailed explanation-3: -(Some textbooks describe direct variation by saying “ y varies directly as x “, “ y varies proportionally as x “, or “ y is directly proportional to x . “) This means that as x increases, y increases and as x decreases, y decreases-and that the ratio between them always stays the same.
Detailed explanation-4: -This constant is called the constant of proportionality. Doubling the x variable, would also double the y variable . If we double the z, the y will also double. But if we double both x and z, then y gets quadrupled.