Final answer:
The probability of drawing a red ball is 4/9. The probability of drawing a yellow ball is 2/9.
Step-by-step explanation:
To find the probability of drawing a red ball, we divide the number of red balls (4) by the total number of balls (9). So the probability of drawing a red ball is 4/9.
To find the probability of drawing a yellow ball, we divide the number of yellow balls (2) by the total number of balls (9). So the probability of drawing a yellow ball is 2/9.