y-3=m(x+9)

Solution for y-3=m(x+9) equation:

Simplifying
y + -3 = m(x + 9)

Reorder the terms:
-3 + y = m(x + 9)

Reorder the terms:
-3 + y = m(9 + x)
-3 + y = (9 * m + x * m)
-3 + y = (9m + mx)

Solving
-3 + y = 9m + mx

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '3' to each side of the equation.
-3 + 3 + y = 9m + 3 + mx

Combine like terms: -3 + 3 = 0
0 + y = 9m + 3 + mx
y = 9m + 3 + mx

Reorder the terms:
y = 3 + 9m + mx

Simplifying
y = 3 + 9m + mx