On a recent day, 8 euros were worth $9 and 24 euros were worth $27. Write an equation of the form y = kx to show the relationship between the number of euros and the value in dollars.

Y = 1.125x, where y is dollars and x is euros

Y = kx

We have to find k value, so lets say x is euros and y is American dollars

so we have

9 = k (8)

k = 1.125

so the equation will be y = 1.125x

to prove it use another value given

y = 1.125x

y = 1.125 (24)

y = 27

Thus 24 euros is 27 dollars.

Hence the equation y = 1.125x is correct.