In a direct variation, the constant of proportionality is -3. Which of the following would be its equation? A) y= x - 3
B) -3y= x
C) y= -3x
D) -3= xy

C

Step-by-step explanation:

The equation of direct variation is y=kx.

K is the constant of proportionality, which is in this case is -3.

y=-3x

the transverse axis of a hyperbola is the line that contains the two vertices and the two focuses.

in this example (hyperbola of equation x^2/2 - y^2/4 = 1), the transverse axis is the  x-axis  . 

step-by-step explanation:

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