Answer:
the unit rate is 0.8x per unit y
Step-by-step explanation:
the proportional relationship is y = [tex]\frac{4x}{5}[/tex]
this means that the constant of proportionality k = [tex]\frac{4}{5}[/tex] = 0.8
re-writing, we have
y = 0.8x
therefore, the unit rate is 0.8x per unit y