Are you sure the equation does say 2X+16=(-1)?
Answer:
Quiana has 8 text messages from Pierre.
Step-by-step explanation:
This question can be solved using a rule of three.
Quiana has 7 times more text messages from Yolanda than from Pierre.
This means that for each message that she receives from Pierre, she receives 7 from Yolanda.
She received 56 from Yolanda.
So
7 messages from Yolanda - 1 messages from Pierre
56 messages from Yolanda - x messages from Pierre



Quiana has 8 text messages from Pierre.
The answer is (-1, 1).
the point in in (x, y) format. where x is along the horizontal(left and right) and y is along the vertical (up and down).