I need help solving the two problems below. Thanks

Question

For each equation, determine whether its graph is symmetric with respect to the -axis, the -axis, and the origin.

Check all symmetries that apply.

1. y=-�ã(4-x^(2))

2. 34x^(2)+12y^(2)=18

Answer 1

thats supposed to be a neg in front of the 4 in problem 1.