D is a function because there are no repeated x values
for example b is not a function because we have (0,-7) and (0,-9)
I don’t understand your question
Answer:
the 2:The constant of proportionality is the ratio between two directly proportional quantities. Two quantities are directly proportional when they increase and decrease at the same rate. 3
Step-by-step explanation:
40 to 8
Each pizza costs $8 and the delivery fee is $3.
D or the last dot how ever you wanna describe it
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Answer</h3>
They are being multiplied by 2 each time.