Final answer:
To locate p - q on number line a, subtract q from p. To locate p (-q) on number line b, take the negative of q and add it to p.
Step-by-step explanation:
To locate p - q on number line a, we subtract the value of q from the value of p. Since p has a value of 3 and q has a value of 5, p - q equals 3 - 5 = -2. So on number line a, we locate -2.
To locate p (-q) on number line b, we take the negative of the value of q and add it to the value of p. So p (-q) = 3 + (-5) = -2. Therefore, on number line b, we also locate -2.
To determine the values of r and s, we need more information. Please provide the values of r and s.