The answer is D. It can't be considered a funtion unless each X value only has 1 Y value corresponding to it. In this problem, you see the X value 3 paired with -1 and 1.
Answer:
1: 86 inches is the width
2: -20
Step-by-step explanation:
a1=6
a2=15
a3=24
a4=33
Hope this helps!