Answer:
Relation 3 is not a function, as s has two outputs: tree and desk. Relation 4 is not a function for the same reason. -1 has three outputs: -2, -4, and -7.
Answer: Its a function
Step-by-step explanation:
20
11,13,15,17,19,21,23,25,27,29,31,33,35,37,39,41,43,45,47,49
y = 5
z = 55
90 - 35 = 55
7y = 35
y= 5
32
it multiplies by -2 every time
