Which of the following equations represnets a proportional relationship

y=5x

please see the attached picture..

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Y is proportional to x

☆ Remove the proportional sign

y = k x

if k = 5

y = 5x

f(x) = x^3 -2x^2 -3x

x( x^2 -2x-3)

x( x^2 +x -3x -3)

x( x(x+1) -3(x+1))

x( x-3)( x+1)

so zeroes are 0, 3,-1

its (2) option

umumumumum

im not sure