Final answer:
Option (c) is the correct mapping to map Q onto B.
Step-by-step explanation:
To map Q onto B, we need to find a mapping that satisfies the condition (1)/(7)>(-x,y). Let's evaluate each option:
a. (x,y)->(x,y+4): This mapping does not satisfy the condition, as it does not involve the variable 'x' in the second coordinate.
b. (x,y)->(x,-y): This mapping also does not satisfy the condition, as the sign of 'x' is negative and does not match the 'x' in the condition.
Therefore, the correct mapping that would map Q onto B is option (c).