Answer:
84 + x*1 = 8x
Step-by-step explanation:
Xavier needs to sell 12 painting to break even.
Given:
There are given the equation:

Explanation:
From the equation (1):
Put the value of x into the equation (2):
So,
From the equation (2):

Now,
Put the value of y into the equation (1):
So,
From the first equation:

Final answer:
Hence, the ordered pair of the solution is shown below:
The slope is: 2
Ok done. Thank to me:>