Hello, I would like some help with the questions listed below with written explanations and work

2xy- 12 = 3 10. x/3+ 1/3 = 1 Find the slope of the curve at the given point: 11. x + y = 25; (3,-4) 12 . xy = - 8 ; (4 ,- 2) 13 . x y = x + 2 ; ( 2, 1 ) 14 . x /4 + y /4 = 4 ; (16, 16 ) Is xy' +xy = 2; (1,-2) 16. =1; (1, 1) #+ly+1 Find the equation of the tangent line to the curve at the given point. 17) 12(x2 + y )= 25 xy; (3,4) 18. x2 + xy + yz = 7; (3, 2) 19. = 2 ; (1, 1) 20. \\xy' + x' y = 1; (-1, -1)