Justify a solution of an equation

Which points are on the graph of the equation  -3x + 6y + 5 = -7 ?
Select all that apply.
A.)  (-3,6)
B.)  (-2,0)
C.)  (0,-2)
D.)  (6,-3)
E.)  (8,2)

Substitute the (x,y) coordinates into the equation.  If it makes a true statement, then the coordinates are a solution.  In other words, the point lies on the graph.

A.)  (-3,6)
-3x + 6y + 5 = -7   {the equation}
-3(-3) + 6(6) + 5 = -7   {substituted}
9 + 36 + 5 = -7   {multiplied}
50 = -7   {added}
False, not a point on the line.

C.)  (0,-2)
-3x + 6y + 5 = -7   {the equation}
-3(0) + 6(-2) + 5 = -7   {substituted}
0 - 12 + 5 = -7   {multiplied}
-7 = -7   {added}
True, is a point on the line.

E.)  (8,2)
-3x + 6y + 5 = -7   {the equation}
-3(8) + 6(2) + 5 = -7   {substituted}
-24 + 12 + 5 = -7   {multiplied}
-7 = -7   {added}
True, is a point on the line.


C.)  (0,-2)
    and 
E.)  (8,2)
are points which lie on  -3x + 6y + 5 = -7

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B.)  (-2,0)
-3x + 6y + 5 = -7   {the equation}
-3(-2) + 6(0) + 5 = -7   {substituted}
6 + 0 + 5 = -7   {multiplied}
11 = -7   {added}
False, not a point on the line.

D.)  (6,-3)
-3x + 6y + 5 = -7   {the equation}
-3(6) + 6(-3) + 5 = -7   {substituted}
-18 - 18 + 5 = -7   {multiplied}
-31 = -7   {added}
False, not a point on the line.