Answer:
The constant rate of proportionality is 2.5.
Step-by-step explanation:
The formula for constant rate of proportionality is y divided by x.
So, we would then solve the quotient of each y and x.
The first one would be 10 divided by 4, which is 2.5.
The second one would be 12.5 divided by 5, which is also 2.5.
The third and final one would be 25 divided by 10, which is also 2.5.
Hence, the constant rate of proportionality would be 2.5.
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