math (Help)

Determine whether the equation defines y as a linear function of x. If so, write it in the form
y = mx + b.


a. y=-6x-7
b. y=-6x+7
c. y=6x
d. y is not a linear function of x

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  1. if it has the square root of a variable in it (y^.5), it is not a straight line

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