y-9=-9(X+1)

Solution for y-9=-9(X+1) equation:

Simplifying
y + -9 = -9(X + 1)

Reorder the terms:
-9 + y = -9(X + 1)

Reorder the terms:
-9 + y = -9(1 + X)
-9 + y = (1 * -9 + X * -9)
-9 + y = (-9 + -9X)

Add '9' to each side of the equation.
-9 + 9 + y = -9 + 9 + -9X

Combine like terms: -9 + 9 = 0
0 + y = -9 + 9 + -9X
y = -9 + 9 + -9X

Combine like terms: -9 + 9 = 0
y = 0 + -9X
y = -9X

Solving
y = -9X

Solving for variable 'y'.

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

Simplifying
y = -9X