Irene R. answered • 09/12/19
Tutor
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BS in Mechanical Engineering and Certified math teacher for 13 years
Proportional relationships have a constant value (called k) and they have the form y=kx
For this problem , if you divide both sides of your equation by 4:
4y/4 = -8x/4
the result is y=-2x
Since you have a constant (k) of -2, you can say the relationship is proportional.
