plz just solve the questions 3 and 4 only thank you brainiest will be given out to the correct answer

3. the proportional relationship is that for every cup of blue paint, you need 5 cups of yellow paint. so the relationship between the yellow and blue paint that keeps it proportional is 5 time the cups of blue paint, is how many cups of yellow paint you need

4. constant of proportionality is 5 because for every cup of blue paint, you need 5 cups of yellow paint:

2 * 5 = 10

1 * 5 = 10

3 * 5 = 10

Step-by-step explanation:

on friday there were 15 birds