Question

Help me with this please

Answer 1

4.5

Explanation:

y=kx

If we take the the first x and y values:
x=2, y=9

9=k×2

9÷2=k

4.5=k

k=4.5

Answer 2

K=4.5
X multiplied by 4.5 equals y, meaning the constant of proportionality is 4.5