Solve by elimination.. 2x-9y=-4 & 2x+9y=-4

Question

Answer is only 2 numbers in point form ( , ) as points on a graph

Answer 1

To solve by elimination, add the two equations together to eliminate the y-terms. That will leave us with:

 

4x = -8

x = -2

 

If x = -2, then 2(-2) - 9y = -4 if we substitute x = -2 into the first equation. This gives us:

 

-4 - 9y = -4

 

Adding 4 to both sides yields:

 

-9y = 0 or y = 0

 

The coordinate pair is (-2, 0)

 

You can plug x = -2 and y = 0 into either equation to verify the answer