Question

Please help me with this I really need it my grades are trash. Look at the file attached. just tell me which ones are equivalent thanks!

Answer 1

Top left, top right, bottom right

Explanation:

Combine all of them together. I'll use the top left and middle left as my example. We will need to end up with 2 positive x's, 5 negative y's and the number 3.

x + x - y + 1 + 1 + 1 - y - y - y -y

We can see here there are 2 positive x's, 5 negative y's, and the number 3.

If we were to write that into an equation it would be 2x - 5y +3

With the middle left we have

-5y - x -x + 2 + 1

Here we have 2 negative x's, 5 negative y's, and the number 3.

If this were simplified it would be -2x - 5y + 3. We don't want the 2x to be negative therefore it is incorrect.