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Question
1. If y varies directly as x, and y=20, when x=5, what is the constant of variation?
2. If y varies directly as x, and x=4, when the constant of variation is 10, what is y?
3. What is the equation where y varies directly as x, when y=30 and x=7?
Answer #1 for Questions: 1. If y varies directly as x, and y=20, when x=5, what is the constant of variation?
2. If y varies directly as x, and x=4, when the constant of variation is 10, what is y?
3. What is the equation where y varies directly as x, when y=30 and x=7?
Answer:
1. y=kx
20=k5
k=4
2. y=kx
y=10(4)
y=40
3. y=kx
30=k7
k=4.3
Thus the question and answer about 1. If y varies directly as x, and y=20, when x=5, what is the constant of variation? 2. If y varies…, hopefully with answer can help solve your problem.