Put the equation 3y-4x=-6 into slope intercept form

How do you solving the solution of each system using elimination?

Use the formulas a = x 2 – y 2, b = 2xy, c = x 2 + y 2 to answer this question. one leg of a right triangle has length 11 and all sides are whole numbers. find the lengths of the other two sides. the other leg = a0 and the hypotenuse = a1

Ithink i know it but i want to be sure so can you me out ?