algebra

Does the equation 7x-4y=0 represent a direct variation? If so, find the constant of variation.
A) yes; k= 7/4
B) yes, k=-4
C) No ( i think c)
D) yes; k=-7/4

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  1. If you have an equation of the form y = mx + b, and b = 0
    then you have a direct variation

    So for yours:
    7x-4y=0
    -4y = -7x
    y = (7/4)x , no b value, so .....

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