Answer:

Step-by-step explanation:
equation : c=£1.25 for example to find out 3 cans : 3c= £1.25x3
The model for direct proportion is y = mx. Note that there is no "offset," no "y-intercept."
y = 6x represents direct proportion with a constant of proportionality 6. The other 2 choices are disqualified because of offset +6 or -6.
You take the whole number and put it in a fraction over 1 then divide by flipping the second fraction and multiplying