GROWTH DEVELOPMENT CHILD
SUMMATIVE ASSESSMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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y varies directly as x and z, and y=15 when x=1/2 and z=10. Find y when x=1/3 and z=1.
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1
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Explanation:
Detailed explanation-1: -Summary: y = ( k × x ) / z2, where k is the constant of proportionality.
Detailed explanation-2: -The phrase “ y varies directly as x” or “ y is directly proportional to x” means that as x gets bigger, so does y, and as x gets smaller, so does y.
Detailed explanation-3: -Algebra Examples Since x=15 is a vertical line, there is no y-intercept.
Detailed explanation-4: -For example, if y varies directly as x, and y = 6 when x = 2, the constant of variation is k = = 3. Thus, the equation describing this direct variation is y = 3x.
There is 1 question to complete.