The double implication "if and only if" is graphically represented by an arrow pointing in both direction, so the correct writing is

Answer:
1/2
2
Step-by-step explanation:
y = 1/2x - 4 (the slope for this line is 1/2)
y = 2x - 3 (the slope for this line is 2)
Hope this helps!
Answer:
answer is 89.23.I hope this answer will help you
Answer:
4.5 and 6
Step-by-step explanation:
Step-by-step explanation:
-2+3-12-2
1+15=16 Answer
hope it helps