Which of the following is the equation of a direct variation that has a constant of variation equal to -?
y = x -
-y = x
y = -2x
y = -x
Y=2x Just passed my test wit a 100
The equation of a direct variation, where the constant of variation is represented by the letter "k," is given by the formula y = kx.
Looking at the provided options, the equation that represents a direct variation with a constant of variation equal to - is y = -x.
To identify the equation of a direct variation, we need to look for the constant of variation, which represents the relationship between the variables. In a direct variation, the equation takes the form y = kx, where k is the constant of variation.
Out of the four options provided, the equation that represents a direct variation with a constant of variation equal to - is:
y = -x
To determine this, we can compare this equation to the standard form of a direct variation equation, y = kx. In this case, k = -1, which means the constant of variation is -1.