Solve the system by using a table.
-0.2x-0.3y=0.2
0.4x-0.3y=1.4
The possible answers are;
1. (2,2)
2. (2,-2)
3. (2,1)
4. (-2,2)
Please help I'm so confused:(

Question

Solve the system by using a table.
-0.2x-0.3y=0.2
0.4x-0.3y=1.4
The possible answers are;
1. (2,2)
2. (2,-2)
3. (2,1)
4. (-2,2)
Please help I'm so confused:(

hero · Answer

You can solve it using a table, but you should first do something about those pesky decimals. Those are what may be causing your confusion. Simply multiply both sides of each equation by 10, then you'll have

-2x - 3y = 2
 4x - 3y = 14

Also you can express the system as

2x + 3y = -2
4x - 3y = 14

Now it looks something similar to what you are used to working with.

hero · Answer

Probably the quickest way to figure out which point is correct is to test each point by plugging it in to both equations. The point you choose has to work for both equations in order for it to be the correct one.

anonymous · Answer

Thank you @Hero !

hero · Answer

You're welcome

hero · Answer

@Briana_Brooke which answer choice did you pick?

anonymous · Answer

(-2,2) @Hero

hero · Answer

What about (2, -2)?

anonymous · Answer

oh! @Hero I must have gotten them switched around somehow

hero · Answer

That's okay

anonymous · Answer

can you help me with another one @Hero ?

hero · Answer

Close this question and post a new one.