11.using k as the constant of variation,write the equation of variation for this statement.the acceleration A of a moving object varies directly as the distance d it travels and inversely as the square of the time t it travels
12.what is the mathematical sentence of this statement,the pressure P of a gas varies directly as its temperature t and inversely as its volume V?
A.P=ktv
B.P=kv/t
C.K=Ptv
D P=kt/v
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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.