Question

What is the constant of proportionality

Answer 1

Answer: 0.2

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Step-by-step explanation:

For each row, divide y over x to find r

This is because y = rx solves to r = y/x

• Row one: r = y/x = (1.6)/8 = 0.2
• Row two: r = y/x = 3/15 = 0.2
• Row three: r = y/x = (4.4)/22 = 0.2

We get r = 0.2 each time to confirm that x and y are directly proportional.

The equation goes from y = rx to y = 0.2x

Note: 0.2 converts to the fraction 1/5