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9. Which of the following is the value of the
variation constant?
a. 12 b. 15
C. 18
d. 21


Sagot :

Answer:

Since k is constant (the same for every point), we can find k when given any point by dividing the y-coordinate by the x-coordinate. 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.