Question

I dont get how to do this pls help
Classify each equation as a linear equation in standard form, a linear equation not in standard form, or a nonlinear equation. Some problems on the bottom
1)2x+5y=2
2)xy=9
3)x+y=x-y

Answer 1

1. linear equation not in standard form(stand form is y =mx + b)
2. nonlinear
3. linear equation not in standard for

Answer 2

Then can you do these
4.x^2+y^2=16
5.2/x+3/y=3
6.x/4+y/7=1

Answer 3

4. nonlinear
5. nonlinear
6. linear but not in standard form