THE ANSWER IS THE COMMON DIFFERENCE IS -7.2 (first answer)
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Your going to have to elaborate on this question
Answer:

Step-by-step explanation:

Answer:
a. a reflection over the x-axis and then a reflection over the y-axis
Step-by-step explanation:
If you plot it on a graph (you can use Desmos), you can see the triangles and only a. a reflection over the x-axis and then a reflection over the y-axis makes sense.