Answer: A = -3, B = 1, and C = 19 OR A = 3, B= -1, C = -19 (look at the explaination)
Step-by-step explanation:
You will need to expand the equation given to you.
y-7 = 3(x+4)
y-7=3x+12
y- 7 + 7 = 3x + 12 +7
y = 3x + 19
-3x + y = 19
Therefore, A = -3, B = 1, and C = 19
But, you can also write it as:
y = 3x + 19
3x - y = -19
A = 3, B= -1, C = -19
So, I don't know what your teacher wants but both answers should be right.
