Question 393784
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Hi
standard form of a line is in the form Ax + By = C , where a is positive.
Performing the operations necessary to have this format:
1. y = x+9     |subtracting  y and 9 from both sides of the equation
   -9 = x - y   |in the form Ax + By = C
OR   x - y = -9
2. y = 3x + 7   |subtracting  y and 7 from both sides of the equation
   -7 = 3x - y
OR     3x - y = -7  |in the form Ax + By = C
3. y  = 4x + 8 |subtracting  y and 8 from both sides of the equation
   -8 = 4x - y
OR      4x - y = -8  |in the form Ax + By = C