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Answer:
k = 3.5
Step-by-step explanation:
The equation representing a proportional relationship is
y = kx ← k is the constant of proportion
Divide both sides by x , then
k = [tex]\frac{y}{x}[/tex]
Using the point (1, 3.5 ), then
k = [tex]\frac{3.5}{1}[/tex] = 3.5