Question

Use Elimination or substitution x^2+y^2=10 and 3y=x

Answer 1

if x = 3y you can substitute that into x^2 ==> (3y)^2

Now you have a quadratic equation entirely in terms of y. Solve this by factoring or using the quadratic formula.

Answer 2

i came up with 2(2y^2-5) did i do something wrong?