Question

The quantities x and y are proportional. X = 4, 5, 10. Y = 10, 12.5, 25. Find the constant of proportionality (r) in the equation y = rx.

Answer 1

Answer:

r = 2.5

Step-by-step explanation:

given the equation y = rx ← r is the constant of proportionality

then r = $\frac{y}{x}$

from the given values of x and y

r = $\frac{25}{10}$ = $\frac{12.5}{5}$ = $\frac{10}{4}$ = 2.5

Answer 2

Answer:

2.5

Step-by-step explanation:

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