What is the probability of rolling a 1 ora 4 on a number cube labeled 1 through 6?

For each number, there is a 1/6  probability of rolling it (so 1/6  for the 1 and also 1/6 for the 4).

This means that the probability of rolling either a 1 or a 4 on a given roll is  

1 /6 +   1 /6 = 2/6 = 1/3  

hope this answer helps you

Is 1/6

Step-by-step explanation:

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value